Originally Posted by CallsignVega
These things are strange animals. With two cards in SLI one of them clocks 55 MHz lower even though they are set the same in precision. The max OC I have found stable in all programs is 120/300 in SLI. They are still a bit faster than my EVGA Ultra Classified 580's, but nothing to write home about. I will most likely sell all four of my vanilla 680's and get four EVGA Classified Hydro-Coppers when they launch, and then "big Kepler" later in the year. So that will be about four series of GPU's I will have in one year LOL.
7970 -> 2GB 680 -> 4GB 680 -> Big Kepler all in 2012.
The maximum stable (within 5MHz) of both my friend's and mine cards are 120/455. 5Mhz higher on memory or core results in both artifacting and/or crashing. These cards aren't in the same system. We got them in the same shipment.. so kind of expected them to be similiar in overclocking but they seem to be EXACTLY the same. His boost 28MHz higher than mine though... I PMed EVGAJacob about it and he said it's normal for some cards to boost higher than others. Consider boost is on 100% of the time for us when we are benchmarking heaven, or playing a modern game, it's a big deal.
I'm not sure about you but that's a slippery slope. Even at stock his card boosts 28MHz higher than mine, and I feel that boost should not vary between cards. You said yourself, one of yours runs 55MHz lower. You paid the same for both, yet one card is superior even if you aren't overclocking. I'm not sure I like that.
Originally Posted by Jodiuh
What kind of vcore are you guys seeing on these cards?
1.16V seems a little high for stock settings running BF3 @ roughly 1056Mhz. This is also not a very quiet card. :/
My card is pretty much dead silent until 70%? Max is 85%. I can keep my card at 68C and not even hear the fan, which is about 65% fan.
You can't adjust the voltage. The most you can do is force 1.175v which ensures the card uses 1.175v when it's under load, but nothing else. 1.175v is the stock load voltage so your not doing anything unless your card is like mine and likes to step down to 1.164v and then crash the program because of it.Edited by Murlocke - 3/25/12 at 12:26am