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Old 2009-06-09, 23:42   #1
kaeptn_kork
 
Sep 2002

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Default AMD Phenom II cache influence

Hi,

does anyone already got some data on the influence of L3 cache size (2M/6M/8M) on p95 iteration times for the AMD Phenom2 architecture?
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Old 2009-06-10, 05:01   #2
RMAC9.5
 
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Jun 2003

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AFAIK, George has not added any code to Prime95 Version 25.9 which takes advantage of the L3 cache to increase performance. Prime95 version 25.9 build 4 recognizes the L3 cache, but does not take advantage of it yet.
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Old 2009-06-10, 06:56   #3
lfm
 
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Jul 2006
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Quote:
Originally Posted by kaeptn_kork View Post
Hi,

does anyone already got some data on the influence of L3 cache size (2M/6M/8M) on p95 iteration times for the AMD Phenom2 architecture?
There is lots of data already in the benchmarks. You might be able to see an answer there.
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Old 2009-06-10, 22:32   #4
kaeptn_kork
 
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Quote:
Originally Posted by lfm View Post
There is lots of data already in the benchmarks. You might be able to see an answer there.
There is indeed, unfortunately there's a huge spread which makes general statements difficult. One of the reasons is the lack of indication of the software version.

Quote:
Originally Posted by RMAC9.5 View Post
AFAIK, George has not added any code to Prime95 Version 25.9 which takes advantage of the L3 cache to increase performance. Prime95 version 25.9 build 4 recognizes the L3 cache, but does not take advantage of it yet.
OK... didn't expect that, makes it easier
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