Overclocking Corsair XMS2 PC6400C4

Vertigo

Vertigo

Vertigo

Soldato
Joined
28 Dec 2003
Posts
16,527
I have 4 x 1GB sticks of XM2 PC6400C4. Running at 400Mhz FSB I can raise the voltage to 2.1v to get the advertised 4-4-4-12 timings - all great.

Now I've raised my FSB to 445Mhz and dropped the timings back to 5-5-5-18, still at 2.1v, and all seems stable. Unfortunately, if I try to raise the FSB above 400Mhz with 4-4-4-12 timings then it fails almost immediately.

The question is, how should I best go about trying to tighten the timings at 445Mhz? Should I put some more voltage through it and, if so, how much? Which of the four main timings should I try tightening/relaxing? I've seen some people tightening some of the first three at the expense of the last one, such as 4-4-4-30 - is this worth trying?
 
Am I right in thinking that, on Intel platforms, outright speed is far more important than latency anyway?

What I mean is, how much overall speed would I gain by tweaking timings? It's a time-consuming pain overclocking in the first place, without the additional hassle of then trying to optimise your memory. If the gains are only slight I'll just leave it at 5-5-5-18. I do actually want to use the machine for stuff rather than just tweaking it all the time :)
 
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