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[TPU] Ivy Bridge-E Core Processors To Still Pack Six Cores

post #1 of 135
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Quote:
Ivy Bridge-E will be an upscale of Ivy Bridge. Similar to Sandy Bridge-E, the silicon will feature up to eight cores and 20 MB L3 cache. In its Core i7 avatar, however, the chip will be configured with no more than six cores, and no more than 15 MB L3 cache. The new chip will introduce IPC improvements, PCI-Express Gen 3.0 certified root complex (one which NVIDIA will approve of), higher CPU core clock speeds, and support for faster memory.
TDP could be the only reason Intel isn't willing to unlock cores 7 and 8 on client processors. Eight core, 20 MB LLC-laden Xeon E5 models based on today's 32 nm silicon, with 130W TDP, barely manage to scrape the 3.00 GHz mark. Given that, the prospects for Ivy Bridge-E client CPUs to run with all cores and LLC enabled, and yet deliver higher clock speeds than predecessors were always going to be low.

Not sure if this has been stated before but I thought I would share anyways.

Soruce
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post #2 of 135
Not buying this.

First of all, intel isn't worried about going over 130W TDP. They already have the 3970X which has a 150W TDP.

Secondly IB-EP is a native 12 core (img link) and I find it extremely unlikely that intel would disable half the cores for consumer CPUs.

The only way this could actually turn out to be true (even for the highest end part, I'm not saying we wont have 6-core IB-Es) would be if intel made a specific chip for enthusiasts. A chip that would only have 6 cores. Again I find that pretty unlikely considering that it's most likely just more cost efficient to use crippled IB-EP dies for IB-E than to spend the R&D money on a new chip and be forced to throw away more CPUs.
 
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post #3 of 135
Surely Intel understands we've seen the light of moar coars and want them even if we don't need them?
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post #4 of 135
Since AMD is out of the picture, Intel is going to price according. I find it unlikely Intel will release only 6 cores on 22nm tech but I do expect to see 1500$ and 2000$ CPUs with more cores unlocked. If they releases 8-10 core chips for cheaper, they would be driving down their own prices for 4-6 core CPUs, driving down prices unfortunately the job of competitors, not Intel.
post #5 of 135
Quote:
Originally Posted by Alatar View Post

Not buying this.

First of all, intel isn't worried about going over 130W TDP. They already have the 3970X which has a 150W TDP.

Secondly IB-EP is a native 12 core (img link) and I find it extremely unlikely that intel would disable half the cores for consumer CPUs.

The only way this could actually turn out to be true (even for the highest end part, I'm not saying we wont have 6-core IB-Es) would be if intel made a specific chip for enthusiasts. A chip that would only have 6 cores. Again I find that pretty unlikely considering that it's most likely just more cost efficient to use crippled IB-EP dies for IB-E than to spend the R&D money on a new chip and be forced to throw away more CPUs.

I might buy one, but not next year. Maybe in two years. When word came a few weeks ago that Intel wouldn't be releasing IB-e this year but only after Haswell, I said it didn't make much sense, but given that the platform still has a lot of performance, AMD doesn't compete in this segment and the economy is not great, it actually makes sense they only release it next year.

As to making a specific 6 core die, it wouldn't surprise me. The Core i7-3820 is a native quad core die, which is exactly half of the 8 core SB-ep, so making a native 6 core die in order not to waste perfectly good 12 core dies and having to disable half the cores seems like the logical thing to do. Also bear in mind that yields will probably be quite good since they will have been making 22nm CPUs for a year and a half when IB-e is launched, so there won't be too much room to disable cores. I do expect the entry level 22nm IB-e to be a native six core without HT and the high-end models with HT. Maybe if the market demands it, maybe in the first half of 2014 we might see an 8 core CPU launched late into the platform's life, just like Intel launched the i7 990X.
Edited by tpi2007 - 11/1/12 at 9:08am
 
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post #6 of 135
Wow I hope this isn't true. If it is no one in their right mind should buy X79.
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post #7 of 135
Quote:
Originally Posted by Stay Puft View Post

Wow I hope this isn't true. If it is no one in their right mind should buy X79.

i am not in my right mind yet i wouldn't even bother with X79 ethier way when Z75 and Z77 get the job done just as well biggrin.gif
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post #8 of 135
Quote:
Originally Posted by Stay Puft View Post

Wow I hope this isn't true. If it is no one in their right mind should buy X79.

Even 6 IB cores will easily beat a quad haswell. So people who actually do something other than game and have the budget for hexas would buy it for the best performance around.

But this just sounds really unlikely.
 
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post #9 of 135
Quote:
Originally Posted by Alatar View Post

Even 6 IB cores will easily beat a quad haswell. So people who actually do something other than game and have the budget for hexas would buy it for the best performance around.
But this just sounds really unlikely.

Well have to wait and see how fast haswell turns out to be. If its 15-20% better then ivy I won't see a point in a 6 core ibe.

Does anyone have a percentage a 3930K beats a 3770K in multithreaded apps?
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post #10 of 135
15-20% higher per-core performance cannot beat 50% more cores in highly multithreaded applications. Simple math.
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