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Subject: Re: hardware question (SDRAM or DDRAM?)

Author: Matt Taylor

Date: 08:42:17 12/04/02

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On December 04, 2002 at 10:43:59, Vincent Diepeveen wrote:

>On December 04, 2002 at 10:21:08, James T. Walker wrote:
>
>>On December 04, 2002 at 08:00:35, martin fierz wrote:
>>
>>>hi,
>>>
>>>i'm on the lookout for a new PC for endgame database computations. i'll probably
>>>be buying a lot of ram, 2-3GB. i see that there is a big price difference
>>>between DDRAM and SDRAM. IIRC the main difference is that you get a larger
>>>bandwidth, but about the same latency with DDR - so i suppose i'm better off
>>>buying SDRAM for my application. any opinions of the experts?
>>>
>>>thanks in advance
>>>  martin
>>
>>For what it's worth:  I purchased one stick (256M) of DDR ram to compare to my
>>cheap SDRAM.  I found no noticable difference in chess performance (just price).
>> I did not do any extensive testing.  I simply compared Fritz marks.  I suspect
>>that in the future most motherboards will not accept the SDRAM.
>>Jim
>
>I see a big difference. 64 versus 32 bytes cache lines matters
>a lot for DIEP and all software that doesn't fit within L1 cache.
>
>Best regards,
>Vincent

Cache line size is a part of the CPU, not the ram. There are a number of
transitional products, both P4 and Athlon, that accept both SDRAM and DDR SDRAM.
(However, I have never heard of anyone happy with these products.)



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