Originally Posted by Stay Puft
Technically incorrect. With a bios flash you can get to 1.22 something
No you can't. There is a hard lock at 1.21v. Even the stock bios hits 1.21v. It just reports 1.18v in software. You can hard mod a card and it'll just report 1.18v in software.
By default as long as you can keep the gpu under 70c it will run at 1.21v. Thats any GK104.Here is a good post on the subject.
This isn't quite true. All 670 / 680 cards can reach 1.21V out of the box, it is just not advertised. I have actually used quite a few GTX 680 cards that reached 1.21V per DMM out of the box, yet software reports 1175mV.
I reiterate again that you cannot go past 1.21V or 1.175V without a hardware modification, period. It is just not possible on the asus card. You can reach 1.21V and software may or may not report it, but the only way to guarantee a higher voltage is by getting the MSI card.
I have read a thread over at OCN with people making a big deal about how their cards are supposedly "overvolted" when they only reach 1.21V. 1.21V is possible out of the box with no modifications. So what? If you want to guarantee a higher voltage you go buy the MSI card.
The last thing to note is that software doesn't always report proper voltage. In fact, it rarely does. The only way to properly measure voltage on the kepler is with a digital multimeter, period end of story. Case in point, my lightnings report 1175mV in software while (on the LN2 BIOS) they are using 1.26V with no software overvoltage. Bottom line is don't take any software reported voltage seriously, DMM is the only method to get a proper reading with kepler cards, period.
Originally Posted by Derek1387
Yes, it is. But at the same time...you are comparing two cards out of the box...
when overclocked, one could hit 1300 core, while the other may hit 1100, while the next one might hit 1350... you cant gauge it accurately.
One is voltage locked and the other isn't. With good cooling a 7950 will almost always have a lot more overclocking headroom. You would have to have a pretty crappy 7950 to not be able to hit 1100mhz and even if you did aftermarket cooling should fix that. You would have to get a golden 660ti to be able to hit 1350mhz. Of the three kepler cards that I had not one could hit 1300mhz.Edited by BababooeyHTJ - 12/6/12 at 3:33pm