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CPU Speed or RAM Speed?

Last response: in Overclocking
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April 8, 2011 3:57:44 PM

Hello, everyone. This is my first time posting to these forums, although I've been reading them a while.

I have an Athlon II 630 X4 rated at 2.8Ghz and am using four sticks of DDR3-1600 9-9-9-24 RAM. When running at stock speeds (2.8Ghz CPU/1600Mhz RAM), everything is Prime95 stable, but when I overclock my processor, I run into stability issues unless I reduce my RAM speed to 1066. With an FSB speed of 240 Mhz, this gives me a CPU clock rate of 3.36 Ghz and RAM speed of 1280 Mhz, 9-9-9-24. Is this trade-off of RAM/CPU speed worth it? Also, should I try to tighten the timings?

More about : cpu speed ram speed

a b K Overclocking
April 8, 2011 4:05:35 PM

mhm...

i doubt the Athlon II 630 X4 is BE so have you hit all your multipliers yet?

if it won't run steady at 1600mhz, increase the dram voltage by a little and see if it gets any more stable.

Since you're overclocking FSB, if your ram doesn't go well past 1600mhz, just set it lower so it doesn't go above 1600 with the oc.

Finding D-ram timing is a waste of time on my end, i just leave my crap at 999-24. runs fine lmao.
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April 8, 2011 4:41:54 PM

trihedral said:
mhm...

i doubt the Athlon II 630 X4 is BE so have you hit all your multipliers yet?

if it won't run steady at 1600mhz, increase the dram voltage by a little and see if it gets any more stable.

Since you're overclocking FSB, if your ram doesn't go well past 1600mhz, just set it lower so it doesn't go above 1600 with the oc.

Finding D-ram timing is a waste of time on my end, i just leave my crap at 999-24. runs fine lmao.


It's not a Black Edition-- you're right, I'm using FSB. Here's the odd thing: It works fine at 1600 Mhz when the FSB is right around 200, but when it gets increased things get unstable even when the RAM speed is set to 1333 (so that the net RAM speed is right around 1600). When I set the ram to 1066, it's fine and I can get to the FSB wall (just above 240 Mhz). Increasing RAM voltage doesn't help. Do Athlon IIs have weak memory controllers? I don't think the RAM itself is the issue.

So basically, will I see improved performance over my stock specs even if the RAM is ultimately a little slower than it originally was?
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a b K Overclocking
April 8, 2011 4:57:02 PM

well, it seems you hit a wall in your overclock, the athlon seems to not control memory that well when it's up that high. memory isn't the problem, because it should work as long as it's 1600 at 200fsb or over with adjusted ram.

perhaps keep your cpu at 3.2ghz with 1333 ram or as much as you can get away with.

what power supply do you use? your multipliers are already at the highest ratio right?

overclocking with multipliers are better than fsb.
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April 8, 2011 5:19:30 PM

Multipliers are all maxed except for northbridge (as a precaution, I decreased it from x10 to x9 to prevent instability from a high HT; I'll see about putting it back to x10.)

Also my PSU is more than sufficient. (52a on 12v rail)
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a b K Overclocking
April 8, 2011 8:26:47 PM

mhm NB is what needs to be up. HT doesn't really matter.

though there might be an insignificant boost from 60-100mhz.
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April 15, 2011 1:14:13 AM

Best answer selected by EricTheAnteater.
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