lowest core voltage that's stable... right?

G

graysky

Gawd
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May 6, 2007
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Until now, I left the VCore to "auto" running my q6600 @ 9x333 on my P5B-Del. It's usually 1.33 V (speedfan). Is it good practice to try to identify the lowest core voltage that will give a stable system since more voltage gives greater heat? I know orthos will report errors in the math if things aren't right.

For example, I set the cvoltage to 1.2875 in the BIOS which is 1.24 V (speedfan) at idle and 1.20 at load (orthos x2). This caused one of the orthos to give an error.

Thanks for the advice.
 
the default voltage is somewhere between 1.325 and 1.35 for that chip (i forget exactly what it is for quad cores) but 1.28 in bios might be 1.225 actual voltage (under load, after vdroop) which is probably not enough. you can usualy get around 3.0-3.2ghz on stock voltage though, set it to 1.35 and see if you still get errors. if you have a really good chip and can run lower voltages while being stable then great, but its not stable obviously so your going to need some more volts.
 
lowest core voltage that's stable... right?
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in general yes, but everything in moderation is the real key, if you have met anyoverclocking goals and the machine is stable at reasonable voltages, find the lowest stable voltage, then give it one "tic" of increased voltage to ensure stability. Not a rule, just my suggestion.
 
Cool, for some reason I thought under volting could cause damage as well. Seems as though a setting of 1.3250 v in the BIOS translates into 1.26 v idle and 1.23 v under load. It's been going strong w/ 2x orthos for 50 m now. I'll just let it run and make sure.

Question: is the stability @ a given voltage a function of ambient temp? It's 72 F in the room now, but it can easily reach 78 or 80 F this summer.
 
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