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What more important memory speed or memory latency (for gaming)?
Whats More Important?
- Thread starter jimbonkers
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Which part of latenct is most important?
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Cas makes the biggest difference, also the 1T command rate makes a very big difference.
Just dug out an recent Micro Mart mag that had a feature on timings and they found the following:-
Cas........The biggest performance gain. Moving from cas 3 to cas 2 gets you around 2% increase in perfromance.
tRCD/Ras to Cas........Moving from 4 to 3 gives a similar improvement as Cas (above), So also about 2%.
tRP/Ras precharge........Going from 4 down to 2 (if able) will yield around 1% in performance increase.
tRAS/Active to precharge delay/Bank cycle time........Reducing from 8 to 6 gives about the same as tRP above, 1%.
Command rate........Going from 2T to 1T will give you about a 5% increase.
There are loads of other settings but it does'nt go into these. My mobo's bios has a mind boggling array of memory tweaks and i don't even know what half of them do. If you have Bank interleave in your bios settings alway try setting it to the highest your board/memory will allow for maximum performance.
I was lucky with my 2x512mb Crucial value ram. It defaults to 3-3-3-8 1T @ddr400 but it will run 2.5-2-2-5 1T at ddr400 and 3-3-3-5 1T at ddr500 so i noticed a huge boost at stock speeds and a decent boost at ddr500. Don't like to run it at that though as i need to run 2.8v through it.
Just dug out an recent Micro Mart mag that had a feature on timings and they found the following:-
Cas........The biggest performance gain. Moving from cas 3 to cas 2 gets you around 2% increase in perfromance.
tRCD/Ras to Cas........Moving from 4 to 3 gives a similar improvement as Cas (above), So also about 2%.
tRP/Ras precharge........Going from 4 down to 2 (if able) will yield around 1% in performance increase.
tRAS/Active to precharge delay/Bank cycle time........Reducing from 8 to 6 gives about the same as tRP above, 1%.
Command rate........Going from 2T to 1T will give you about a 5% increase.
There are loads of other settings but it does'nt go into these. My mobo's bios has a mind boggling array of memory tweaks and i don't even know what half of them do. If you have Bank interleave in your bios settings alway try setting it to the highest your board/memory will allow for maximum performance.
I was lucky with my 2x512mb Crucial value ram. It defaults to 3-3-3-8 1T @ddr400 but it will run 2.5-2-2-5 1T at ddr400 and 3-3-3-5 1T at ddr500 so i noticed a huge boost at stock speeds and a decent boost at ddr500. Don't like to run it at that though as i need to run 2.8v through it.