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So if going from CAS 2 to CAS 2.5 slows ram down why do my Sandra scores go up?

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Old 08-04-02, 07:53 AM Thread Starter   #1
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So if going from CAS 2 to CAS 2.5 slows ram down why do my Sandra scores go up?


I also increase my speed from 200 to 207 Mhz, but could this slight increase in speed make up for the speed lose when raising CAS timing? If Sandra doesn't take CAS timings into account when testing mem banwidth should I try 200 mhz @ 1.5 CAS? Thanks for any info you can provide on the subject.
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Old 08-04-02, 10:21 PM   #2
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i dont know sandra is messed up we should really find a more accurate bench.

explain this. i get higher scores at 190fsb 2-2-2-2t than i do at 200fsb with exact same timings.

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Old 08-05-02, 10:00 AM   #3
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Try running the benchmark several times and averaging the results. I've noticed my 3dmark scores have differed by about 100 points with the exact same settings. The same may be true with Sandra.
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Old 08-05-02, 12:52 PM   #4
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here is a quote from the memory article:
Some of you may have noticed that your memory performs worse at CAS 2 than CAS 2.5/3 (or at any other lower timings than normal). My understanding is that if the memory chips just can’t handle a certain speed setting, then it is possible some of the data fetches will have just ‘missed’ their turn. For example, the memory has tried to charge both the column and row, but has failed to do it quite quick enough. As a result, nothing is output that cycle, but rather the next cycle – which adds on that complete clock cycle that you were trying to eliminate in the first place. And even then, the faster timing will make the memory more susceptible to errors.
http://www.radiativenz.com/guides/me...e/index3.shtml

see the other thread
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Old 08-05-02, 04:58 PM Thread Starter   #5
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Interesting. Thanks for the link
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