AMD Phenom II cache influence

kaeptn_kork · 2009-06-09, 23:42

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?

RMAC9.5 · 2009-06-10, 05:01

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.

lfm · 2009-06-10, 06:56

Quote:

Originally Posted by kaeptn_kork

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.

kaeptn_kork · 2009-06-10, 22:32

Quote:

Originally Posted by lfm

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

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

2009-06-09, 23:42	#1
kaeptn_kork Sep 2002 19₁₆ Posts	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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2009-06-10, 05:01	#2
RMAC9.5 Jun 2003 3²×17 Posts	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.