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Subject: Re: L2 Cache Question

Author: Robert Hyatt

Date: 08:42:53 10/27/05

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On October 27, 2005 at 10:19:38, Vincent Lejeune wrote:

>On October 27, 2005 at 10:11:41, Robert Hyatt wrote:
>
>>On October 27, 2005 at 09:54:12, Jasmine Baer wrote:
>>
>>>Thank you, Dr. Hyatt.  I appreciate your response.
>>
>>
>>I could add, in testing Crafty on 512K and 1024K chips, the speed difference was
>>in the 7% range.  The price difference was a factor of 2.0 different.  :)
>
>Are you sure it's so big ?
>
>I see :
>Athlon 64 X2 4800+  (1 MB)  : $1,001
>Athlon 64 X2 4600+ (512 KB) : $803
>
>http://hardware.gamespot.com/Story-ST-17478-1945-x-x-x


I saw

Intel xeon 700mhz 512K $1300
Intel xeon 700mhz 1024K $2600
Intel xeon 700mhz 2048K $5500

several years ago.  I have seen similar pricing for newer xeons.  Even if
doubling cache costs only 50% more (rather than nearly 100% as above) the 7%
speedup (with crafty, YMMV with other programs) really makes it not worthwhile
from a price/performance basis...




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