+12v CPU - how critical is accuracy?

[brenanh]

Just wondering if anyone has any experience with this? Basically I have a decent PSU (Tier 2 750w) and the rails are pretty solid, but the +12v CPU current is only 11.88v.

Could this affect the max achievable FSB?

[g1raffe]

ATX spec states that it has to be +/-5% from 12V, to 11.4 to 12.6V is acceptable.

11.88 is fine.

however, how are you measuring this voltage? If its through software like Speedfan or the BIOS then it isn't very accurate anyway.

[brenanh]

ATX spec states that it has to be +/-5% from 12V, to 11.4 to 12.6V is acceptable.

11.88 is fine.

however, how are you measuring this voltage? If its through software like Speedfan or the BIOS then it isn't very accurate anyway.

Thanks for the info. Yeah I'm only measuring it through the BIOS... Speedfan reports 11.2 but that MUST be wrong!

Was just wondering whether >12v is better than <12v generally for high FSB overclocking.

[Tonucci]

Thanks for the info. Yeah I'm only measuring it through the BIOS... Speedfan reports 11.2 but that MUST be wrong!

Was just wondering whether >12v is better than <12v generally for high FSB overclocking.

Hmm, even if software readings arent accurate I would be worried about this 11.2 reading...

I think you should try to get an Digital Multimeter to see if It really out of spec. Test in full load too (something like orthos +ATITool), its more relevant.

[Preetham]

the best way to know the rail vtg is using the multimeter.