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Subject: Re: Does DDR Ram really Increase computer performance?

Author: Robert Hyatt

Date: 09:13:32 04/06/03

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On April 06, 2003 at 06:28:28, Matt Taylor wrote:

>On April 05, 2003 at 23:35:45, Robert Hyatt wrote:
>
>>On April 05, 2003 at 23:23:39, George Wilson wrote:
>>
>>>Exactly how much of a speed increase do you get,if at all? Is it worth it to
>>>upgrade from SDRam to DDR for computer chess?
>>
>>As always, it depends on the program and processor.  SDRAM seems to have a
>>better
>>latency, but DDR is not bad and can produce significantly better bandwidth.
>
>SDRAM and DDR SDRAM have roughly identical latency (+/- 1/2 bus clock). DDR
>SDRAM has twice the bandwidth, at least on paper.
>
>-Matt


I know, "in theory".  However, in practice, SDRAM always seems to be faster when
I run lmbench.  Usually about 10 ns, approximately...




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