How can people achieve 50% overclock with stock voltage. I read in a lot of reviews that guys are running Opteron 170 @2.9ghz with stock voltage. Can you increase the CPU multiplier without increasing voltage? Do these guys not know what stock voltage means. It doesn't make sense to me that a chip rated for 1.8Ghz @1.35v (or whatever it is) will run stable at 2.9Ghz @ 1.35v. I currently have mine going at 2.9Ghz @1.45v. I had to drop the multiplier because of the MB. I would have liked to have not voided the warranty. Oh well!
i think it is relevant to the architectural design of the chip. while there are a lot of people OCing Core 2 using stock voltage (i'm one of them
), i rarely hear ppl talking about OCing X2s using stock voltage.
in terms of Opteron OCing, i think its due to Opteron's manufacture quality.
P.S.
personally i have an E6300 @ 2.8 Ghz (54% OC), while undervolted (1.25V, i think the stock was 1.3V).I think good cooling has
a lot to do with it also. Using your 54% O/C, even with stock vCore, the chip will be producing more heat, as electrons race around faster, etc. :? But i see you are cooling with water, which takes heat out of the equation, to more of an extent than with stock air. Wusy's discussed this many times...
Exampleshypothetical)
With an E6300@1860 + 1.30v..stock cooling giving a load temp of say...43C
Now..same chip @ 3200 + 1.40v.. aftermarket air cooling giving a load temp of ... again 43C. This chip would be less stable than at stock speed, even though load temps are the same, as the higher the voltage, the cooler the chip needs to run in order to be stable. Look at WR runs w/LN2. Say you have an E6300 on LN2 running @ 4200 w/load temp of
-40C and 1.80 vCore. You have to think that they should be able raise clock-speeds until they hit 43C(as it runs super-stable at 43C &
stock speed), but no... they hit the chips limit at -40C. So that kind of proves that chips walk a fine line between cooling and voltage.