Quote from: BenD on July 10, 2011, 01:42:41 AM

Quote from: shivansps on July 09, 2011, 06:04:18 AM

Cant be donde whiout increasing voltage, voltages cant be increased beyond bios limit in Linux, AMDOverdriveCtrl only allow voltages changes in bios limit (so nothing, as the limit is the stock voltage).

I just noticed that voltage adjustment with Sapphire 5850 Xtreme works. However, power consumption rises about 80 W/h, even with slightest changes, e.g. 1,088 V -> 1,094 V. Two of these cards are in my PC. Temperatures rise over 80 °C, too.
I use Catalyst 11.6 and SDK 2.4 with phoenix.

I could be wrong but I believe that the VRMs on the 5850s only handle voltage in increments of 12.5mV so the next level above 1.088 (really 1.0875V) would be 1.1V. I say this because 1.094V is pretty much half-way between 1.0875V and 1.1V so I'm wondering if you know more than I do (this information is hard to find). It's possible that the driver is rounding 1.094V up to 1.1V.

[rant]Also, at least for my card, Catalyst 11.6 doesn't remove the limit so much as it raises it. I can't overvolt past 1.3V. Perhaps the VRMs on my card don't know how to do anything with more than 1.3V but, given everything we've seen up until now, I'd wager it's yet another software limit.

Does anyone know of a card manufacturer that does not believe in software limits? It might be nice to have a card which I can order to "fall on it's sword" so to speak. I'm tired of using safety scissors and tippy cups. I don't mind limits which force the card to shut down in the event of a surge or the like but at least let me change those limits in software where possible.[/rant]