Overclocking a CPU

[silentmelodies]

I'm learning on overclocking CPUs. Never did that, so i need to learn it because i'm curious.

So i crank up my old Sempron, raise the bus speed from 200MHz to 255MHz, doing a overclock from 1600MHz to 2033MHz. The multiplier is 8.

So, i raise the bus speed to 260MHz and the system crashes. Why?

Im running a ASRock board with untied bus speed. So RAM and PCI-e is unaffected, only the CPU. It's pretty cool.

I can not modify the multiplier or the vcore voltage.

But if i could, what should i do to get a bus speed of 260 and 2100MHz without Windows crashing and a successful Prime95 30min test? Raise vcore? Raise mutliplier?

All new to this, so no laugh
 

NOTE: Temperature not a factor.
 

[Deletive]

why not just increase the multiplier? than do the bus speed for a little extra afterwards?

[harrynowl]

Well if it's running out of factory spec then it depends on how 'good' your chip is.

[Razzaa]

Raise clock if it passes a 10 min prime95 then raise again. If it fails then raise vcore. Once you have reached the desired speed/temps then run a longer test for stability.

[harrynowl]

why not just increase the multiplier? than do the bus speed for a little extra afterwards?

Old CPUs overclocked via FSB and not multi.

[Deletive]

Old CPUs overclocked via FSB and not multi.

oh