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Guest Kevin_merged

RAM timings or clock speeds for best performance?

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Guest Kevin

This has most likely been covered before but im to lazy to look =/

 

The 510-2 bios that i just flashed to has been liking my Kingston value Samsung TCCC RAM much more then the old bios did. Anyways its given me some more flexibility.. i was able to pass memtest and super pi (have yet to prime it) at 243 mhz with Bank Interleave on at 3-4-4-10 timings.. yes i know . timings lol..thats why im asking.

 

Basically i wanna know a few things.

 

First of all this RAM has no heatspreaders and i dont have any active cooling on the RAM so im curious to see how many volts i can safely use.. right now im at 2.7..not sure if that is even too much or if i can go more.

 

 

Secondly, and more importantly, what is better for performance ...lower timings or higher speeds? I think i should probably atleast wanna get my timings back to the default 3-3-3-8 but ill probably have to lower the clock on it.

 

Anyawys basically what im asking is if i should go for lower timings or higher clocks?

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Guest nova

First - Memory heat spreaders,.... um.. look nice IMHO, but really don't do much. 2.9v will not be a problem.

Second - Higher CPU speeds trump lower mem timings (especially on an A64).

Yes, lower the timings and raise the clock!

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Yes, as high as you can get the clocks, push them. Because of the on-die memory controller on the chip, having dividers or running really loose timings doesn't really hurt it. If you want to run the lowest divider to test the limits of your chip, it may be a good thing to actually leave that way too, since you have value RAM.

 

Post some results, so you can back up our truths :D

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Put some fans on those mems! You'll be surprised how much better they oc. Use 2x80's or 1 92 or 120. I don't have that ram but fans seem to help universally.

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It is obvious that your main goal should be to max out your CPU speed but if you're asking which is faster, more mem mhzs or tighter timings it is not that easy to say... there's only one way to know that...

 

Running 3DMark2001SE and some real-life benches and timedemos (FarCry/Half-Life2/Doom3) will show you how little if at all you gain by raising mem mhzs if you have to loosen the timings... I know my mem at DDR400 2-2-2-6 is not beaten by a LARGE margin by ANY other stable settings with high clocks and looser timings... But then again, there are not very large margins to be had with mem overclocking from the overall performance standpoint in the first place...

 

I'm guessing with your RAM you'll be fine with highest mem clocks you can get with tightest possible timings and using a divider to max out your CPU, since loosening the timings will propably not give you too much higher clocks but instead lower the performance somewhat...

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