AMD: Barcelona quad-core 50% faster than Intel’s quad-core Xeon
source - http://www.tgdaily.com/content/view/31729/135/
Quote:
There are lots of question marks surrounding AMD’s first quad-core CPU, the Barcelona server/workstation processor. How fast will it be and - most importantly - will it be able to outpace Intel’s quad-core Xeon 5300-series (“Clovertown”) processors. It will, says AMD, and in fact upgraded its performance expectations.
So far, we the company had claimed that Barcelona will surpass the performance of Clovertown by about 40% at any given clock speed. Now the company says that it believes that Barcelona will have a 50% advantage over Clovertown in floating point applications and 20% in integer performance “over the competition’s highest-performing quad-core processor at the same frequency.”
Latest benchmark claims not good for AMD.
This post on another forum is right:
http://www.siliconinvestor.com/readm...msgid=23484492
>>Today's AMD PR claims 50% in floating point and 20% in integer at same clock. So even if there is 3ghz (Intel) vs 2.5 ghz (amd) frequency advantage, that would still translate into a 25% floating point advantage and a tie for integer.
Oh, no. You see, it is "up to", meaning the very best one they can find, in both cases. Furthermore, it is clearly the "rate" versions of SPEC_int/fp 2006 in both cases, in a 2P configuration.
AMD will lose virtually everything against 3GHz Woodcrest, outside of bandwidth-intensive FP apps, and that is once they manage the 2.5GHz parts. And don't forget they are stuck at 2.3GHz 95W at launch for a quarter, if DailyTech is right...
Penryn @ 3.33GHz (or higher) is going to blow Barc out of the water.
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You want another indication for how bad this is for AMD? Look at K8 vs. same-clocked C2D on 2P rate for 2006 fp/int:
int: 3% faster
fp: 16% faster
And yet, consider the huge variety of applications where same-clocked Woodcrest/Conroe *blows away* same-clocked K8, despite the 2006 Spec int/fp rate marks!
So, how does a Barcelona core compare to a K8 core clock/clock?
"Up to" 17% faster for int
"Up to" 29% faster for fp
Trouble is: 95W K8 is 2.8/2.3 : 22% higher clocked than Barc.
120W K8 is 20% higher clocked than Barc.
So Barcelona integer performance *will not improve* from K8 levels, once clock is taken into account.
FP performance gets a bump, as expected.
Conclusion: 3GHz Woodcrest will continue to dominate on all apps except bandwidth-heavy FP stuff.
Then Penryn arrives. :)
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I would add, it goes without saying that Woodcrest will maintain a large lead in gaming.