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P4 1.9 and Abit th7-11 raid how to overclock!!!!

You can overclock, but you wont be able to get it much over spec. The "Northwood" P4s are the ones that everyone is having so much luck overclocking. Your's is based off of the old willamatte (spelling?) core, which is based on a 0.15 (I think) micron core and only has 256k of cache.
 
Definatley not very well. But here is what I would do.

Bump the voltage to 110FSB and use the *lock* option, which frezes PCI and AGP speeds in place. Now see if it's stable. If it's not stable, decrease FSB speed or increase voltage (you only want to increase voltage a bit. Like, maybe .15 over it's stock level, before it gets dangerous to the processors help). If it is stable at that speed with no voltage bump, bump it up one notch on the FSB scale... like.. 1MHZ. If it's stable there, repeat until it starts getting unstable. If it's ever unstable in operation just bump it down 1MHZ FSB.
 
Oh, BTW, you only want to bump the voltage to decrease instability .05 at a time. Anything else is hazardous. If it remains unstable, bump it again. I wouldn't bump it past 1.85
 
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