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[Question] What is the difference between the Xeon E5-2690 vs Xeon E5-2687? - Page 2

post #11 of 13
Quote:
Originally Posted by dizzy4 View Post

It's all speculation until someone tests it or until intel releases the information. That said, the TDP increase does make some sense. Maybe it will turbo higher too.

Just going off the tech specs on the two newegg links provided by the OP.

Real world power draw will obviously differ from the reported TDPs.

Intel does like charging a premium for a lower TDP part.
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post #12 of 13
Here is the ark.intel.com link for the E5-2687W
http://ark.intel.com/products/64582/Intel-Xeon-Processor-E5-2687W-%2820M-Cache-3_10-GHz-8_00-GTs-Intel-QPI%29
and for the E5-2690
http://ark.intel.com/products/64596/Intel-Xeon-Processor-E5-2690-%2820M-Cache-2_90-GHz-8_00-GTs-Intel-QPI%29

The E5-2690 has a lower TDP, but the same maximum turbo frequency of 3.8GHz.

As others have stated, the E5 Xeons don't overclock much at all, beyond about 105 MHz BCLK. In my opinion it wouldn't be worth the risk of hard drive data corruption. As for unlocked eight cores, there were rumors a while ago that those might come with a D0 Sandy Bridge-EP stepping. I'd be surprised to see such a stepping before Q3. If they do arrive, I expect they would be uniprocessor chips only, and that multiprocessor capable Xeons will remain fully locked. (The only unlocked Westmere-EP Xeons were the W3680 and W3690, which were uniprocessor chips).

Regarding TDP, my B-0 ES of the eight core E5-2650 is rated at 95W and consumes about 72W under prime95 at 2200MHz according to hwmonitor.

EDIT: I would definitely say the E5-2687W would be better for the SR-X. It's maximum turbo may be the same as the E5-2690, but its all core turbo should be slightly higher.
Edited by gplnpsb - 3/11/12 at 9:52pm
post #13 of 13
Without the ability to OC an 8-core SB-E, I'm more likely to move my i7 970 into the girlfriend's work PC and give LGA-1366 one last hurrah with a Xeon W3680 than anything.

The difference between a 4.3-4.5GHz Gulftown and a 4.5-4.7GHz SB-E six core is not worth the cost of new motherboard, especially since I don't have anything that makes good use of AVX yet.
Quote:
Originally Posted by dizzy4 View Post

It's all speculation until someone tests it or until intel releases the information. That said, the TDP increase does make some sense. Maybe it will turbo higher too.

Intel released the information a while ago, as gplnpsb has mentioned.
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