XP64 killed my overclock ?

Hi there !
I've just installed XP64 and I cannot boot a over 4ghz.
I was 110% stable @ 4.1ghz low voltage with my 640 in XP
Someone experienced a similar problem :confused:
TY

I have noticed same thing too.
WinXP 64-bit edition gives much lower overclock than it´s 32-bit predecessor.

Quote:

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Originally Posted by The Stilt

I have noticed same thing too.
WinXP 64-bit edition gives much lower overclock than it´s 32-bit predecessor.

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activated and fully updated, I can't even overclock @ 4ghz :(
this is kinda weird too...it look like a integrated sp2 :stick:

Ouch, just cancelled my xp64 install on other comp. Going to do xp spa1 then.

Quote:

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Originally Posted by n00b 0f l337

Ouch, just cancelled my xp64 install on other comp. Going to do xp spa1 then.

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xp sp1a is the best way to go

Exactly same thing here. 4.200 with xp32, with xp64 the maximum was the 4.000 barrier.

Same here can,t go over 260fsb 64bit.

this is realy bad :(
is there a problem with AMD64 too...i didn't tried on mine since it's a "gaming rig" ?