Archived from groups: alt.comp.periphs.mainboard.epox (
More info?)
> I tried the previous higher settings, but the machine wasn't stable so
> I came back to the 200 x 11 setting. So what is holding me back here?
> I have 2 off 256MB PC3200 TwinMos that I could try.
Impossible to say what is holding you back - you will have to experiment
and try to isolate the different parameters while testing.
I recommend you to get the superb tool 8rdavcore for your experiments. It
will let you adjust FSB, VCore, ram timings etc from Windows. It saves a
lot of time. The changes you make with 8rdavcore is not permanent, so if
your system locks up and you will have to reboot all settings will be back
to normal. Get it at http://www.hasw.net/
First you should find out what the max FSB for your mobo is. To do this you
should first lower the multi and release RAM timings to make sure that it
is not the cpu or the ram that is limiting you from upping FSB. Set multi
to 9 or someting, keep Vcore at 1.6V and set ram timings to something
looser than you have now. Say from 2-3-3-11 to 2.5-4-4-11 or to 3-5-5-11.
What is suitable will depend on your current settings and your ram. Read
the specification for you ram to find out what timings/speed(fsb 200 of
course)/voltage they are rated for.
Then raise FSB in suitable steps (+5 for ex) and test for stability. 3dmark
is good for that. When your system is instable, back down -1 until stable.
Then play FarCry or Doom3 or something to see if it is REALLY stable.
When you know you max FSB it is time to find out how far your cpu will go.
Increase the multi step by step and use Prime95 torturetest to test for
stability. When you get errors, increase VCore until stable and continue to
increase mulit/vcore while monitoring temps closely. Good cooling is
essential here. If you reach 50ºC already at 2.2GHz temps will probably be
too high if you run, say 2.5GHz @ 1.8V. You should consider getting better
cooling; your case must have good ventilation and the cpu cooler should be
a premium one to hanle these speeds/voltages.
Finally you should find out how low timings your ram can handle at your
selected FSB speed. Use Memtest to check stability. You can try to increase
voltage to the memory as well to get it stable at lower timings. You can
never go lower than 2-2-2-11 (well, actually the "11" can be a lot lower,
but that would be slower) but I doubt you reach that low, especially if you
reach higher FSB than 200. And of course it is possible that your other
pair of ram sticks can handle lower timings than the ones you use now - you
will have to try.
/Ville
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