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Old 2015-05-07, 01:27   #1
Dabigley13
 
May 2015

48 Posts
Default recognizing only 4MB of 8MB L2 cache

I noticed one thing while using Prime95, it doesn't recognize my full L2 cache. I have an older Intel core 2 Quad Q6600 which has not one but two sets of 4MB L2 cache for a total of 8MB. Prime95 is only recognizing 4MB. Is there a setting that needs to be changed to let Prime95 recognize my full L2 cache? Could that cause instability issues?
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Old 2015-05-07, 02:29   #2
sdbardwick
 
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Core2 Quads are actually 2 Core2 Duos held together by bailing wire. The L2 cache for each Core2 Duo is exclusive to that pair of processors.

Edit:
Even if the cache were shared, the only communication between each pair is via the FSB, so cache access to another pair's cache would be about as slow as accessing main memory.

Last fiddled with by sdbardwick on 2015-05-07 at 02:33
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Old 2015-05-07, 02:40   #3
Prime95
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Whether prime95 detects this as 4MB or 8MB will not make any difference in prime95's execution.
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Old 2015-05-07, 05:21   #4
sdbardwick
 
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Darn it, I wrote basically the same thing and it disappeared!
Oh well, better coming from the creator!

No more posting from a tablet until I become more familiar with the quirks.

Last fiddled with by sdbardwick on 2015-05-07 at 05:22
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Old 2015-05-08, 07:45   #5
Dabigley13
 
May 2015

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Thank you that helps a lot.
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