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Old 6th November, 2003, 11:33 PM
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Memory timings?

What would be the best memory timings for a stick of 512mb Corsair Value? The lowest I got was 4-3-3-2,5. I've read around that 11-*-*-* is actually the fastest, does that apply to my ram too?
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Old 7th November, 2003, 01:16 AM
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Quote:
Originally Posted by Veky
What would be the best memory timings for a stick of 512mb Corsair Value? The lowest I got was 4-3-3-2,5. I've read around that 11-*-*-* is actually the fastest, does that apply to my ram too?
Once you've determined best Trcd, CAS and Trcd, the 'best' Tras latency is that which provides maximum memory bandwidth.

Use the Sandra Memory Benchmark test, testing with a variety of Tras values, to determine the Tras value that produces the highest memory bandwidth.

Hope this helps!
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Old 7th November, 2003, 10:42 AM
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TRAS does not want to be too short. If it's too short, then the memory controller will interrupt burst transfers to close the bank!
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Old 7th November, 2003, 04:23 PM
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Quote:
Originally Posted by Veky
What would be the best memory timings for a stick of 512mb Corsair Value? The lowest I got was 4-3-3-2,5. I've read around that 11-*-*-* is actually the fastest, does that apply to my ram too?
4 is too low... run that at 11, and see if you can tighten the other timings. 11 is the widely used value.
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Old 7th November, 2003, 08:23 PM
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Quote:
Originally Posted by SteveI
4 is too low... run that at 11, and see if you can tighten the other timings. 11 is the widely used value.
I did try 11-3-3-2,5 and the scores were higher than 4-3-3-2,5.
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Old 7th November, 2003, 09:32 PM
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I did try 11-3-3-2,5 and the scores were higher than 4-3-3-2,5.
I can't tell you that's the best... some argue that 12 is better. At least you know it is a good setting. See if you can tighten up elswhere. If possible, I think the preferred timing is 2.0-2-2-11.
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Old 9th November, 2003, 01:17 AM
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Quote:
Originally Posted by SteveI
I can't tell you that's the best... some argue that 12 is better. At least you know it is a good setting. See if you can tighten up elswhere. If possible, I think the preferred timing is 2.0-2-2-11.
Optimum Tras is dependant on both system memory and board chipset.

Optimum Tras for my BuffaloTech PC3700 is about a toss-up between 7 or 8, on both Epox 8RDA+v1.1 and NF7Sv2, per Sandra Memory Bandwidth test. Memory bandwidth values fell off rapidly above Tras 9 and below Tras 7.

Hope this helps!
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