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Did people put unrealistic expectations on Ivy Bridge?

post #1 of 61
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Everyone seems up in arms about the fact that Ivy Bridge is limited by thermals and for most users is about 5% worse of an overclocker than Sandy Bridge was. It seems that everyone expected that because Intel is going to 22nm that this would be a huge boon for overclocking in the same way that Bloomfield to Ivy Bridge was. But I think people are ignoring the more important nuances of the Ivy Bridge launch.

Mobile CPUs

Within the same 45W power envelope and the same price points the Ivy Bridge quad cores are 200MHz faster in both normal clock and turbo clocks than their Sandy Bridge counterparts. Couple this with the integration of USB3.0 onto the chipset and the increase IPC and it amounts to 10-30 percent increase in single and multi threaded performance and a reduction in total power consumption since an add in chip is removed.

It's Not Really That Different From History

I think a lot of people forget the fact that the 32nm process was not pioneered on Sandy Bridge. Arrandale/Clarksdale as well as Gulftown were all 32nm chips. While the 45nm Nehalem derivatives were hitting 4.0-4.2GHz the 32nm chips were not hitting that much higher. This is compounded by the fact that Clarksdale had half the cores, I'm quite sure if you disabled half the cores on Ivy Bridge temperatures would be much less of an issue than they are now. The C0 i7 920s were also pretty trashy overclockers from memory with most falling on the bad side of 4.0GHz.

Higher IPC Balances the Lack of Overhead

Yes 5.0GHz looks good but is it that hard to accept that 4.8GHz on a more efficient architecture could be just as good?

Maybe They Are Just Meant To Be Hotter?

I can't seem to find the TCase for the third generation Core processors on either the Intel website or the data sheets. The first i Core processors ran hotter than the Core 2 Quads even on the same process, the Tcase on 920 being 67.9 vs 64.5. Maybe there are greater tolerances for heat in the 22nm process? Fermi was a very hot GPU but even a couple years on there haven't been lots of GTX480 failures despite their high temperatures.

Sandy Bridge required a leap of faith in the overclocking community that a die shrink didn't necessarily mean more delicate transistors. People going beyond 1.4V on Nehalem were regulated to water or sub zero cooling, 1.4V and above quickly became "safe" in the eyes of people who had SB processors.

Revisions?

There may well be a stepping revision that reduces heat. There was for the early Bloomfield chips and there may well be one for Ivy Bridge.
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post #2 of 61
People that did zero research had unrealistic expectations. Anyone who took 20 minutes to read any of the many previews floating around would have understood exactly what they were buying.
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post #3 of 61
Quote:
Originally Posted by Robilar View Post

People that did zero research had unrealistic expectations. Anyone who took 20 minutes to read any of the many previews floating around would have understood exactly what they were buying.

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post #4 of 61
Quote:
Originally Posted by Robilar View Post

People that did zero research had unrealistic expectations. Anyone who took 20 minutes to read any of the many previews floating around would have understood exactly what they were buying.
+1
post #5 of 61
I didn't see anything at all in previews pointing to sky high OC temps so I'm not sure how you can make that statement. First anyone got wind of it was a month or two before release and even then it was all unsubstantiated. I think the temperature issues are dissapointing but considering it's still the fasted x86 quad on the market there is not too much to complain about.

If your on sandy though there is no real point in upgrading.
    
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post #6 of 61
Quote:
Originally Posted by Robilar View Post

People that did zero research had unrealistic expectations. Anyone who took 20 minutes to read any of the many previews floating around would have understood exactly what they were buying.

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post #7 of 61
Quote:
Originally Posted by jtom320 View Post

I didn't see anything at all in previews pointing to sky high OC temps so I'm not sure how you can make that statement. First anyone got wind of it was a month or two before release and even then it was all unsubstantiated. I think the temperature issues are dissapointing but considering it's still the fasted x86 quad on the market there is not too much to complain about.
If your on sandy though there is no real point in upgrading.

Google is your friend thumb.gif

XS had ES samples well before launch.
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post #8 of 61
Quote:
Originally Posted by jtom320 View Post

I didn't see anything at all in previews pointing to sky high OC temps so I'm not sure how you can make that statement. First anyone got wind of it was a month or two before release and even then it was all unsubstantiated. I think the temperature issues are dissapointing but considering it's still the fasted x86 quad on the market there is not too much to complain about.
If your on sandy though there is no real point in upgrading.

It was in the news section about the temps. To me it is common sense. You are going to a 22nm everything is more compact/close together. you have less area to draw away heat.

articles her on ocn
http://www.overclock.net/t/1244309/obr-why-is-ivy-bridge-hot-power-hungry-and-a-bad-clocker
http://www.overclock.net/t/1248673/why-ivy-bridge-is-so-hot-read
http://www.overclock.net/t/1248518/explanation-of-why-ivy-bridge-runs-so-hot
http://www.overclock.net/t/1250588/ivy-bridge-temps-solved
Edited by Juggalo23451 - 5/1/12 at 8:35am
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post #9 of 61
Quote:
Originally Posted by Robilar View Post

Google is your friend thumb.gif
XS had ES samples well before launch.

Well lucky for you I just did google it. Any previews 2-4 months out from release said nothing about high temps. I don't even know what XS is but if you'd like to link it I'd be happy to look at it.

Edit: Yes I understand right before release the temperature information was out there. What I'm saying is 6 months ago when people were building expectations no one had a clue.
Edited by jtom320 - 5/1/12 at 8:34am
    
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post #10 of 61
Quote:
Originally Posted by jtom320 View Post

Well lucky for you I just did google it. Any previews 2-4 months out from release said nothing about high temps. I don't even know what XS is but if you'd like to link it I'd be happy to look at it.

look at the post above yours
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