kenpina
Apr 30, 01:56 PM
Purchased: Aug '07
Model No: A1186
EMC No: 2138
Mac Pro/3.0_8CX/4x1/2x7300GT/500/2xSD/AP/BT
Logic board:
Part number: 630-7951
Serial Number: J5*****X7QB
Upgrades:
Added: 8gb Kingston memory (total 12gb)
Added: 3x1tb drives (total 3.5tb)
Couple weeks back, system blinked off. The machines powers on, but there's no chime and the system doesn't boot at all. Done the SMC reset, reseated RAM, drives, video cards etc. Suspected the logic board.
Troubleshooting (from Frys, Apple authorized) confirms it's the logic board.
Now, going through the process of pulling the old board to trade in for a replacement "X7Q" board. Probably this one:
http://www.galaxyhp.com/Mac-Pro-Early-2007-8-core-Logic-Board-ver2-new-wexchange_p_177.html
I got the machine disassembled but I am unable to remove the heat sinks/CPUs. The 4 captive screws loosen, even took them all the way out of the machine, but the sinks seem to be stuck. It doesn't just lift out as most of the online info I've found indicates that it should.
Unsure of how hard to pull on this thing. It wobbles very slightly, but feels firmly stuck on...enough that the board will flex if I pull it any harder.
More reading makes me think it might be the thermal paste is just really sticking? This is really stuck though...almost as though there's another screw I can't see. I thought if I pulled hard enough the CPU might come out along with the sink.
Also I ran across an article (after the fact) that states the order of screw removal from the heat sinks needs to be in a specific crossing pattern. Can't imagine how that matters.
Of course, I paid through the nose for this machine back in late '07. Bought Apple Care even. All long since expired...now that I need it. Getting desperate. This machine is a workhorse and I see no value in replacing it if I can fix it for 700 to 800 bucks.
Any one have ideas?
Model No: A1186
EMC No: 2138
Mac Pro/3.0_8CX/4x1/2x7300GT/500/2xSD/AP/BT
Logic board:
Part number: 630-7951
Serial Number: J5*****X7QB
Upgrades:
Added: 8gb Kingston memory (total 12gb)
Added: 3x1tb drives (total 3.5tb)
Couple weeks back, system blinked off. The machines powers on, but there's no chime and the system doesn't boot at all. Done the SMC reset, reseated RAM, drives, video cards etc. Suspected the logic board.
Troubleshooting (from Frys, Apple authorized) confirms it's the logic board.
Now, going through the process of pulling the old board to trade in for a replacement "X7Q" board. Probably this one:
http://www.galaxyhp.com/Mac-Pro-Early-2007-8-core-Logic-Board-ver2-new-wexchange_p_177.html
I got the machine disassembled but I am unable to remove the heat sinks/CPUs. The 4 captive screws loosen, even took them all the way out of the machine, but the sinks seem to be stuck. It doesn't just lift out as most of the online info I've found indicates that it should.
Unsure of how hard to pull on this thing. It wobbles very slightly, but feels firmly stuck on...enough that the board will flex if I pull it any harder.
More reading makes me think it might be the thermal paste is just really sticking? This is really stuck though...almost as though there's another screw I can't see. I thought if I pulled hard enough the CPU might come out along with the sink.
Also I ran across an article (after the fact) that states the order of screw removal from the heat sinks needs to be in a specific crossing pattern. Can't imagine how that matters.
Of course, I paid through the nose for this machine back in late '07. Bought Apple Care even. All long since expired...now that I need it. Getting desperate. This machine is a workhorse and I see no value in replacing it if I can fix it for 700 to 800 bucks.
Any one have ideas?
Ugg
May 2, 03:27 PM
Off the top of my head:
-Poverty
-Lack of Education
-Resentment (Much of It Deserved) towards Western Nations
-Religious Fanaticism (which generally correlates with a lack of education)
I think it's important to look at history as well. The Middle East was slowly deforested by increasing numbers of goats, sheep, camels and horses and the great cities were no longer able to support the arts and sciences. Much of the population was nomadic or were small farmers. Such people aren't known for their higher learning or trust of outsiders.
The deserts and mountains provided natural barriers for awhile but money from oil and modern health care meant an explosion in population and resulted in an almost continual clash of cultures. The forced backwardness of traditional, rural Islam and high levels of illiteracy amongst women, especially, ensure a reliance on religious as opposed to secular ideals.
Birth rates have fallen dramatically and the explosion of diabetes and other modern ills in countries like Saudi Arabia, Lebanon, Egypt, Syria, the UAE, etc. means things will change simply because they have to. Although social inequality will remain as long as kings and dictators are in charge.
-Poverty
-Lack of Education
-Resentment (Much of It Deserved) towards Western Nations
-Religious Fanaticism (which generally correlates with a lack of education)
I think it's important to look at history as well. The Middle East was slowly deforested by increasing numbers of goats, sheep, camels and horses and the great cities were no longer able to support the arts and sciences. Much of the population was nomadic or were small farmers. Such people aren't known for their higher learning or trust of outsiders.
The deserts and mountains provided natural barriers for awhile but money from oil and modern health care meant an explosion in population and resulted in an almost continual clash of cultures. The forced backwardness of traditional, rural Islam and high levels of illiteracy amongst women, especially, ensure a reliance on religious as opposed to secular ideals.
Birth rates have fallen dramatically and the explosion of diabetes and other modern ills in countries like Saudi Arabia, Lebanon, Egypt, Syria, the UAE, etc. means things will change simply because they have to. Although social inequality will remain as long as kings and dictators are in charge.
Mac-Addict
Oct 20, 02:58 PM
Ill be there at 3 if possible xD If my mum can take me lol xD (I am like 13 so..)
Someone needs to hold a sign saying "Macrumors forum member here" and we will know who each other are :P
Edit: Ohh yeah Ill be there for definite :D Getting my t-shirt, buying Leopard :)
Someone needs to hold a sign saying "Macrumors forum member here" and we will know who each other are :P
Edit: Ohh yeah Ill be there for definite :D Getting my t-shirt, buying Leopard :)
gopher
Sep 28, 03:04 PM
Every update I see people come on Apple Discussions claim that the update fried their computer. Nothing can be farther from the truth. Without certain precautions data corruption, directory issues, font issues, incompatible drivers, will make an update look bad on the surface. That's why I wrote this FAQ to prevent most upgrade problems. Please everyone take a look at it before you upgrade and decide for yourself when you are ready and finished with those precautions:
http://www.macmaps.com/upgradefaq.html
http://www.macmaps.com/upgradefaq.html
more...
sananda
Oct 26, 10:12 AM
Dear God!! I knew I should have picked a better username...
ha ha!
ha ha!
Jelite
Apr 5, 12:56 PM
I don't like the bar of soap design like the old iPhones. Prefer the iPhone 4 with the glass back and thin design.
I agree but the touch is always thinner and im not sure how tough a thin iP4 would be.
I agree but the touch is always thinner and im not sure how tough a thin iP4 would be.
more...
macharborguy
Mar 23, 04:43 PM
If the goal of Apple software is to sell Apple hardware, wouldn't it make more sense to give the airplay licenses away rather than trying to sell them?
You are looking at this from a "buying new products" position. What about all of those people who already own Roku and Boxee set-top systems? Those boxes are fully updatable and capable of playing back the exact same content the AppleTV can play (MPEG4, AAC, MP3, H.264, etc).
And for people that already own those, NONE of them would switch to an AppleTV. Reason: Roku and Boxee have far more features, save one (AirPlay), and AirPlay alone is not worth $99 to most of those Roku and Boxee owners.
I own a Roku so I can connect it to not only my HDTV in my living room, but move it to my old CRT television in my bedroom (via Component/Composite cables) as well as to hotel TVs when I bring it with me on vacations or out-of-town trips. I would love for AirPlay video to be supported on it.
You are looking at this from a "buying new products" position. What about all of those people who already own Roku and Boxee set-top systems? Those boxes are fully updatable and capable of playing back the exact same content the AppleTV can play (MPEG4, AAC, MP3, H.264, etc).
And for people that already own those, NONE of them would switch to an AppleTV. Reason: Roku and Boxee have far more features, save one (AirPlay), and AirPlay alone is not worth $99 to most of those Roku and Boxee owners.
I own a Roku so I can connect it to not only my HDTV in my living room, but move it to my old CRT television in my bedroom (via Component/Composite cables) as well as to hotel TVs when I bring it with me on vacations or out-of-town trips. I would love for AirPlay video to be supported on it.
runeapple
Mar 26, 03:22 PM
He rich, yet he wears the same thing every day?
Maybe he spent all his money on iPads?
Maybe he spent all his money on iPads?
more...
Iconoclysm
Apr 21, 05:09 PM
So, it's most likely they are going do these things.
1. One device that will work on both VZ and AT&T network
2. 32GB and 64G storage.
3. 1080P recording with 8 megapixel camera
4. A5 chip
5. Maybe higher ram or maybe not.
6. Throw in something new... like better gyroscope or something to just make iPhone 4 outdated, but nothing major.
This is BS. It's not good enough, apple.
Huh? What are you expecting? A Geiger Counter?
1. One device that will work on both VZ and AT&T network
2. 32GB and 64G storage.
3. 1080P recording with 8 megapixel camera
4. A5 chip
5. Maybe higher ram or maybe not.
6. Throw in something new... like better gyroscope or something to just make iPhone 4 outdated, but nothing major.
This is BS. It's not good enough, apple.
Huh? What are you expecting? A Geiger Counter?
nodrog6
Nov 11, 02:26 AM
those were friggin awesome. i love how they are funny even though they're in japanese
more...
Diamons
Nov 27, 11:51 PM
LMAO, is this a joke?? Has to be the dumbest thing I've read this month by a supposed adult.
1) If he is an adult, as you claim, the least you could do is watch your tone and be respectful.
2) I understand it perfectly fine. Just because you're not intellectually capable of understanding his point doesn't mean it's dumb. Quit being ignorant.
1) If he is an adult, as you claim, the least you could do is watch your tone and be respectful.
2) I understand it perfectly fine. Just because you're not intellectually capable of understanding his point doesn't mean it's dumb. Quit being ignorant.
cantthinkofone
Apr 18, 11:45 AM
You Americans got it lucky, petrol here in the UK is about �5.15 per gallon, or $8.30.
I disagree. Europe has public transportation that is centuries ahead of the USA. Gas is $3.79 here in mid Missouri.
I disagree. Europe has public transportation that is centuries ahead of the USA. Gas is $3.79 here in mid Missouri.
more...
rodpascoe
Sep 25, 10:42 AM
Can't believe aperture doesn't support more RAW types yet.
Until it supports more/all of the raw types, it will never be a real 'pro' application imho
I'm using it for my JPEG stuff but I do wish it would support the RAW files from my Fuji S3 :(
Until it supports more/all of the raw types, it will never be a real 'pro' application imho
I'm using it for my JPEG stuff but I do wish it would support the RAW files from my Fuji S3 :(
LimeiBook86
Nov 14, 01:30 PM
that's stupid! why would the person behind me want to watch my videos!? They shouldn't put the video on the seatback of iPod connected passengers, they should put it on the seatback of the passenger in front of them!!
No, no. You got it all wrong. They mean the seatback that your facing. This is usually where the personal video displays are in a section that has them. :rolleyes:
I think this is a good thing for Apple. Once a few companies start to use the dock connector in their planes others will want the same thing. Now if they would still install some dock connectors in coach class...(maybe just not every seat) that would be nice too. :p :D
No, no. You got it all wrong. They mean the seatback that your facing. This is usually where the personal video displays are in a section that has them. :rolleyes:
I think this is a good thing for Apple. Once a few companies start to use the dock connector in their planes others will want the same thing. Now if they would still install some dock connectors in coach class...(maybe just not every seat) that would be nice too. :p :D
more...
chrono1081
Jun 19, 10:39 AM
Is Apple thinking that SD cards are going to become the new "floppies"?
Many people who exchange files by 'sneaker net' use CDs, but don't need the capacity of a CD. Plus while rewriteable CDs exist, they are pricey and most people don't use them. Most files are exchanged a barely used CD that then gets shelved and collects dust.
Imagine if people started exchanging SD cards. Initially lower capacities only will be available, but soon CD equivalent SD cards will be available, and soon after that the 1 and 2 TB cards.
If Apple can create enough demand for cards, then economies of scale will bring prices down as they become a standard commodity.
As others have mentioned the bigger capacity ones would have all sorts of uses besides the exchange of files. Wow.
Hmm.
? Most people use thumb drives not CD Roms.
Also SD cards and thumb drives have been available in sizes much much larger then CD Roms.
Many people who exchange files by 'sneaker net' use CDs, but don't need the capacity of a CD. Plus while rewriteable CDs exist, they are pricey and most people don't use them. Most files are exchanged a barely used CD that then gets shelved and collects dust.
Imagine if people started exchanging SD cards. Initially lower capacities only will be available, but soon CD equivalent SD cards will be available, and soon after that the 1 and 2 TB cards.
If Apple can create enough demand for cards, then economies of scale will bring prices down as they become a standard commodity.
As others have mentioned the bigger capacity ones would have all sorts of uses besides the exchange of files. Wow.
Hmm.
? Most people use thumb drives not CD Roms.
Also SD cards and thumb drives have been available in sizes much much larger then CD Roms.
gregorsamsa
Nov 2, 05:17 PM
In respect to the dedicated graphics card, I totally agree with you here. I keep saying it, but a dedicated gaming machine made in the Apple style would absolutely vault them 5% in share overnight. Maybe more.
However in my experience, fewer people are waiting on Vista for a new machine than you may think. I'm really surprised at how little buzz Vista is getting. I've got several friends with HIGH END hardware running Vista beta now, and the all think it works great except for Aero, which to a person they have all turned off. Every single one of them complains about the speed, but say it is very solid crash-wise, especially for a beta. But when I press them if they will actually buy Vista the day it comes out, all but one said no. The main reason is that there is just nothing all that compelling there. And what with significant evidence (http://media.grc.com/sn/SN-051.mp3) that they have completely re-written their networking stack, I think I'll be with them on the sidelines waiting for a while until they work the bugs out.
So at least in my limited experience, people who need new hardware are buying it now - and not really waiting for Vista, which may be 9-12 months off for them anyway. What this means to me is that Apple's marketshare increases can be written off as an anomaly all that easily.
Thanks for the interesting podcast link. I wasn't unaware of Vista's possible security problems, I just never realized how bad the worst case scenario could be...despite all the delayed launches. Yes, potentially a hackers paradise, but I'd still be surprised if the final version of Vista wasn't far more secure than previous versions of W$.
I think you're right that some people will be wary of becoming early adopters of Vista in light of all the cited beta-version problems. Many may wait for a Vista SP edition (some 12 months away). Also, there's bound to be some initial confusion for less savvy PC users when faced with 6 different versions of Vista. Despite this, I still expect many millions to be swayed by M$'s mass advertizing campaigns to take the plunge soon after launch.
But like you, I think none of this need greatly affect Apple's steady rise in marketshare. For sure, Mac OS X will remain the best & most secure OS there is. I just have growing doubts about whether Apple's lack of dedicated graphics in their consumer Macs, combined with the novelty of M$'s new baby, won't cost Apple dearly in the long term. - I very much hope I'll be proved wrong.
However in my experience, fewer people are waiting on Vista for a new machine than you may think. I'm really surprised at how little buzz Vista is getting. I've got several friends with HIGH END hardware running Vista beta now, and the all think it works great except for Aero, which to a person they have all turned off. Every single one of them complains about the speed, but say it is very solid crash-wise, especially for a beta. But when I press them if they will actually buy Vista the day it comes out, all but one said no. The main reason is that there is just nothing all that compelling there. And what with significant evidence (http://media.grc.com/sn/SN-051.mp3) that they have completely re-written their networking stack, I think I'll be with them on the sidelines waiting for a while until they work the bugs out.
So at least in my limited experience, people who need new hardware are buying it now - and not really waiting for Vista, which may be 9-12 months off for them anyway. What this means to me is that Apple's marketshare increases can be written off as an anomaly all that easily.
Thanks for the interesting podcast link. I wasn't unaware of Vista's possible security problems, I just never realized how bad the worst case scenario could be...despite all the delayed launches. Yes, potentially a hackers paradise, but I'd still be surprised if the final version of Vista wasn't far more secure than previous versions of W$.
I think you're right that some people will be wary of becoming early adopters of Vista in light of all the cited beta-version problems. Many may wait for a Vista SP edition (some 12 months away). Also, there's bound to be some initial confusion for less savvy PC users when faced with 6 different versions of Vista. Despite this, I still expect many millions to be swayed by M$'s mass advertizing campaigns to take the plunge soon after launch.
But like you, I think none of this need greatly affect Apple's steady rise in marketshare. For sure, Mac OS X will remain the best & most secure OS there is. I just have growing doubts about whether Apple's lack of dedicated graphics in their consumer Macs, combined with the novelty of M$'s new baby, won't cost Apple dearly in the long term. - I very much hope I'll be proved wrong.
more...
WestonHarvey1
Apr 12, 02:19 PM
Lucky for you, you got to help finance the mess that is the University system :)
By the end of this year I will have paid the final payment on my loans... I can't believe it's been 15 years! Worst investment I ever made.
Seriously, one of the most eye-opening things when I entered college was learning that I did *not* possess a liberal, open-minded view of race relations. I grew up in a white neighborhood, with nice liberal white teachers, always telling us how we are all equal. I always admired Martin Luther King, Jr.'s speeches when I heard them.
I thought that was the prevailing view until I got to college. I was so naive I wanted to run up to the first black guy I saw, give him a hug, and tell him I understand. Ha, not really, but you know what I mean. Guilty white liberal kid. I was stunned by the violent reaction I got before I'd ever opened my mouth.
Wow. The whole thing was just turned on its head. Nobody talked about true equality as a goal - it was all about power, grievance, reparations... and everything I learned just sounded shockingly racist. I was told that was just how whites see things. Rookie mistake!
By the end of this year I will have paid the final payment on my loans... I can't believe it's been 15 years! Worst investment I ever made.
Seriously, one of the most eye-opening things when I entered college was learning that I did *not* possess a liberal, open-minded view of race relations. I grew up in a white neighborhood, with nice liberal white teachers, always telling us how we are all equal. I always admired Martin Luther King, Jr.'s speeches when I heard them.
I thought that was the prevailing view until I got to college. I was so naive I wanted to run up to the first black guy I saw, give him a hug, and tell him I understand. Ha, not really, but you know what I mean. Guilty white liberal kid. I was stunned by the violent reaction I got before I'd ever opened my mouth.
Wow. The whole thing was just turned on its head. Nobody talked about true equality as a goal - it was all about power, grievance, reparations... and everything I learned just sounded shockingly racist. I was told that was just how whites see things. Rookie mistake!
newfoundglory
Feb 18, 06:05 PM
Steve does look skinny, yes, but more skinny when compared to his most recent keynotes? Probably not, but quite hard to tell really.
I was watching the 2006 WWDC keynote the other day and thats scary - steve looks completely different and a lot younger. He has lost a lot of weight over the last few years.
I was watching the 2006 WWDC keynote the other day and thats scary - steve looks completely different and a lot younger. He has lost a lot of weight over the last few years.
bella92108
Apr 1, 01:31 PM
I am a big fan of the technology brought into the world by TiVo and ReplayTV, but TiVo has been one of the most amazingly horribly run companies I have ever seen. I am shocked they are still in business...and I guess they can thank Dish for that...
Wow... first I've EVER heard someone say a TV\Satellite Provider's DVR doesn't suck. I got rid of DirecTV cause their DVR sucked.
I went to Comcast, and had a Tivo Series 3 then now a Premier, and you'd have to pry this thing out of my cold dead hands. Tivo is arrogant, like Apple, but can be so because they have a quality product that no competitor touches.
You have your opinion, but anyone with a Tivo would disagree, lol, and you shouldn't be surprised their out of business because people love them, just to clue you in, hehe
Wow... first I've EVER heard someone say a TV\Satellite Provider's DVR doesn't suck. I got rid of DirecTV cause their DVR sucked.
I went to Comcast, and had a Tivo Series 3 then now a Premier, and you'd have to pry this thing out of my cold dead hands. Tivo is arrogant, like Apple, but can be so because they have a quality product that no competitor touches.
You have your opinion, but anyone with a Tivo would disagree, lol, and you shouldn't be surprised their out of business because people love them, just to clue you in, hehe
MacRumors
Apr 19, 09:38 AM
http://www.macrumors.com/images/macrumorsthreadlogo.gif (http://www.macrumors.com/2011/04/19/video-of-64-gb-white-iphone-4-running-old-test-ios-4-build-with-expose/)
Engadget points (http://www.engadget.com/2011/04/19/white-iphone-4-used-to-demo-new-multitasking-spotlight-search-i/) to a new video posted (http://www.tinhte.vn/tin-tuc-gioi-thieu-118/tren-tay-giao-dien-da-nhiem-moi-tren-iphone-5-a-663854/) on Vietnamese site Tinhte.vn apparently claiming to show a white iPhone 4 running a "test version" of iOS offering Expose-like multitasking that allows users to select running apps from a grid of nine screenshot thumbnails.You can tap on a window to expand it (replete with animation) to fill the screen or long-press on it to bring up the familiar "x" button for shutting it down. This is all accompanied by a new "Search iPhone" dialog at the very top, which sends you into Spotlight search that looks very much the way it currently does (though it seems to no longer be accessible with a left swipe from the first homescreen as on previous versions of iOS).While the apparently all-white home button and a passing similarity of the multitasking feature to the jailbreak tool multifl0w (http://www.multifl0w.com/) suggest that this could simply be a customized iPhone 4 running jailbreak software.
But a second video posted to the same YouTube account and noticed by 9 to 5 Mac (http://www.9to5mac.com/62499/white-iphone-caught-in-the-wild-running-ios-5-with-expose-multitasking/) offers more detail of what may in fact be a prototype iPhone. The device in the second video may be different than the one in the first video, as the second one seems to have a more standard white home button with black square inside.
The second video clearly shows an "XX GB" marking on the back along with a number of "X" placeholders in model identifiers, common for prototype devices. A walkthrough of the "About" screen in iOS shows, however, that the model carries 64 GB of storage.
Interestingly, a partial glimpse of the iOS build number can be seen as the "About" screen is shown, and the device appears to be running iOS 4.0 with a build number beginning with 8A as would be expected. Consequently, this does appear to be a test version of iOS 4.0 rather than an upcoming iOS 5 build, although Apple could of course choose to implement some of these features in future iOS releases.
The device also appears to contain several preloaded applications internally used by Apple for diagnostics, testing, and demoing, lending additional legitimacy to the claims.
Article Link: Video of 64 GB White iPhone 4 Running Old 'Test' iOS 4 Build With Expose? (http://www.macrumors.com/2011/04/19/video-of-64-gb-white-iphone-4-running-old-test-ios-4-build-with-expose/)
Engadget points (http://www.engadget.com/2011/04/19/white-iphone-4-used-to-demo-new-multitasking-spotlight-search-i/) to a new video posted (http://www.tinhte.vn/tin-tuc-gioi-thieu-118/tren-tay-giao-dien-da-nhiem-moi-tren-iphone-5-a-663854/) on Vietnamese site Tinhte.vn apparently claiming to show a white iPhone 4 running a "test version" of iOS offering Expose-like multitasking that allows users to select running apps from a grid of nine screenshot thumbnails.You can tap on a window to expand it (replete with animation) to fill the screen or long-press on it to bring up the familiar "x" button for shutting it down. This is all accompanied by a new "Search iPhone" dialog at the very top, which sends you into Spotlight search that looks very much the way it currently does (though it seems to no longer be accessible with a left swipe from the first homescreen as on previous versions of iOS).While the apparently all-white home button and a passing similarity of the multitasking feature to the jailbreak tool multifl0w (http://www.multifl0w.com/) suggest that this could simply be a customized iPhone 4 running jailbreak software.
But a second video posted to the same YouTube account and noticed by 9 to 5 Mac (http://www.9to5mac.com/62499/white-iphone-caught-in-the-wild-running-ios-5-with-expose-multitasking/) offers more detail of what may in fact be a prototype iPhone. The device in the second video may be different than the one in the first video, as the second one seems to have a more standard white home button with black square inside.
The second video clearly shows an "XX GB" marking on the back along with a number of "X" placeholders in model identifiers, common for prototype devices. A walkthrough of the "About" screen in iOS shows, however, that the model carries 64 GB of storage.
Interestingly, a partial glimpse of the iOS build number can be seen as the "About" screen is shown, and the device appears to be running iOS 4.0 with a build number beginning with 8A as would be expected. Consequently, this does appear to be a test version of iOS 4.0 rather than an upcoming iOS 5 build, although Apple could of course choose to implement some of these features in future iOS releases.
The device also appears to contain several preloaded applications internally used by Apple for diagnostics, testing, and demoing, lending additional legitimacy to the claims.
Article Link: Video of 64 GB White iPhone 4 Running Old 'Test' iOS 4 Build With Expose? (http://www.macrumors.com/2011/04/19/video-of-64-gb-white-iphone-4-running-old-test-ios-4-build-with-expose/)
jessica.
Oct 27, 02:38 PM
Why spend the money if there is no market?
blake836
Jan 7, 08:42 AM
I got the new facebook update for bug fixes on syncing but not for the fact that I can't hear when I get a notification... I got no sound...
I ran the update for this today and I am getting no notifications at all even though they are all turned on in the settings.
I ran the update for this today and I am getting no notifications at all even though they are all turned on in the settings.
nixd2001
Sep 14, 07:48 PM
Originally posted by onemoof
Someone asked the difference between RISC and CISC.
First thing, there isn't that distinction anymore. RISC originally meant that the processor had fixed width instructions (so it wouldn't have to waste time asking the software how big the next instruction will be). CISC mean that the processor had variable width instructions (meaning time would have to be taken to figure out how long the next instruction is before fetching it.) However, Intel has addressed this problem by making it possible for the processor to switch to a fixed-width mode for special processor intensive purposes. The PowerPC is stuck with fixed-width and has no ability to enjoy the flexibility of variable-width instructions for non-processor-intensive tasks. This means that CISC is now better than RISC. (Using the terms to loosely define Pentium as CISC and PowerPC as RISC.)
Originally it was Reduced versus Complex instruction set computer. Making simpler processors go faster is generally easier than making complex processors go faster as there is less internal state/logic to synchronise and keep track of. For any given fabrication technology, this still generally holds true. Intel managed to sidestep this principle by investing massive sums in their fab plants, effectively meaning that the fab processes being compared weren't the same.
The opposite end of the spectrum from RISC is arguably the VAX line. With this instruction set, massive complexities arose from the fact that a single instruction took so long and did so much. It was possible for timers, interrupts and "page faults" to occur midway during an instruction. This required saving a lot of internal state so that it could later be restored. There were examples of performing a given operation with a single instruction or a sequence of instructions that performed the same effect, but where the sequence achieved the join quicker because the internal implementation within the processor was able to get on with the job quicker because it was actually a simpler task being asked of it.
The idea of fixed sized instructions isn't directly coupled to the original notion of RISC, although it is only one step behind. One of the basic ideas with the original RISC processors was that an instruction should only take a single cycle to complete. So a 100MHz CPU might actually achieve 100M instructions per second. (This was often not achieved due to memory latencies, but this isn't the "fault" of the processor core). In this context, having a variable length instruction means that it is easy for the instruction decoding (especially if it requires more than one "word") to require for effort than any other aspect of executing an instruction.
There are situations where a variable width instruction might have advantages, but the argument goes that breaking the overall task down into equal sized instructions means that fetching (including caching, branch predicting, ec) and decoding these instructions becomes simpler, permitting optimisations and speed gains to be made elsewhere in the processor design.
Intel blur RISC and CISC into gray by effectively executing RISC instructions internally, even if they support the apparent decoding of CISC insructions. They only do this for legacy reasons.
Apple will never switch to IA32 (Pentium) because 32 bit processors are a dead-end and maybe have a couple years left. The reason is because they can only have a maximum of 4 GB of RAM [ (2^32)/(1 Billion) = 4.29 GB ]. This limit is very close to being reached in current desktop computers. Apple MAY at some point decide to jump to IA64 in my opinion, and I think they should. Obviously the Intel family of processors is unbeatable unless they have some sort of catastrophe happen to them. If Apple jumped on they'd be back on track. Unfortunately I don't believe IA64 is yet cheap enough for desktops.
I think this "unbeatable" assertion requires some qualification. It may be that Intel will achieve the best price/performance ratio within a suitable range of qualifications, but this is different from always achieving best p/p ratio whatever. Indeed, IA64 versus Power4 is going to be an interesting battle because Intel has bet on ILP (instruction level parallelism) whereas IBM has bet on data bandwidth. Ultimately (and today!), I think IBM's bet has more going for it. But that's if you want ultimate performance. The PC space is often characterised by people apparenntly wanting ultimate performance but actually always massively qualifiying it with severe price restrictions (such as less than 5 digits to the price).
Someone asked the difference between RISC and CISC.
First thing, there isn't that distinction anymore. RISC originally meant that the processor had fixed width instructions (so it wouldn't have to waste time asking the software how big the next instruction will be). CISC mean that the processor had variable width instructions (meaning time would have to be taken to figure out how long the next instruction is before fetching it.) However, Intel has addressed this problem by making it possible for the processor to switch to a fixed-width mode for special processor intensive purposes. The PowerPC is stuck with fixed-width and has no ability to enjoy the flexibility of variable-width instructions for non-processor-intensive tasks. This means that CISC is now better than RISC. (Using the terms to loosely define Pentium as CISC and PowerPC as RISC.)
Originally it was Reduced versus Complex instruction set computer. Making simpler processors go faster is generally easier than making complex processors go faster as there is less internal state/logic to synchronise and keep track of. For any given fabrication technology, this still generally holds true. Intel managed to sidestep this principle by investing massive sums in their fab plants, effectively meaning that the fab processes being compared weren't the same.
The opposite end of the spectrum from RISC is arguably the VAX line. With this instruction set, massive complexities arose from the fact that a single instruction took so long and did so much. It was possible for timers, interrupts and "page faults" to occur midway during an instruction. This required saving a lot of internal state so that it could later be restored. There were examples of performing a given operation with a single instruction or a sequence of instructions that performed the same effect, but where the sequence achieved the join quicker because the internal implementation within the processor was able to get on with the job quicker because it was actually a simpler task being asked of it.
The idea of fixed sized instructions isn't directly coupled to the original notion of RISC, although it is only one step behind. One of the basic ideas with the original RISC processors was that an instruction should only take a single cycle to complete. So a 100MHz CPU might actually achieve 100M instructions per second. (This was often not achieved due to memory latencies, but this isn't the "fault" of the processor core). In this context, having a variable length instruction means that it is easy for the instruction decoding (especially if it requires more than one "word") to require for effort than any other aspect of executing an instruction.
There are situations where a variable width instruction might have advantages, but the argument goes that breaking the overall task down into equal sized instructions means that fetching (including caching, branch predicting, ec) and decoding these instructions becomes simpler, permitting optimisations and speed gains to be made elsewhere in the processor design.
Intel blur RISC and CISC into gray by effectively executing RISC instructions internally, even if they support the apparent decoding of CISC insructions. They only do this for legacy reasons.
Apple will never switch to IA32 (Pentium) because 32 bit processors are a dead-end and maybe have a couple years left. The reason is because they can only have a maximum of 4 GB of RAM [ (2^32)/(1 Billion) = 4.29 GB ]. This limit is very close to being reached in current desktop computers. Apple MAY at some point decide to jump to IA64 in my opinion, and I think they should. Obviously the Intel family of processors is unbeatable unless they have some sort of catastrophe happen to them. If Apple jumped on they'd be back on track. Unfortunately I don't believe IA64 is yet cheap enough for desktops.
I think this "unbeatable" assertion requires some qualification. It may be that Intel will achieve the best price/performance ratio within a suitable range of qualifications, but this is different from always achieving best p/p ratio whatever. Indeed, IA64 versus Power4 is going to be an interesting battle because Intel has bet on ILP (instruction level parallelism) whereas IBM has bet on data bandwidth. Ultimately (and today!), I think IBM's bet has more going for it. But that's if you want ultimate performance. The PC space is often characterised by people apparenntly wanting ultimate performance but actually always massively qualifiying it with severe price restrictions (such as less than 5 digits to the price).
Link2999
Jun 12, 04:40 PM
I'd rather have T-Mobile than Verizon just because of costs. T-Mobile actually has decent plans compared to other cellular companies.