Originally Posted by Blackops_2
That's pretty high for anything outside the HOF, lightening, or Classified. Congrats. I have two Classifieds and have had trouble getting them to both run at 1200 on the core. I actually had to reflash bios trying to do so due to corruption. I'm fairly sure the 850w psu isn't cutting it, plan to drain and put my 1250 in it soon. I run one most of the time at 1215/6200. Least that or i'm just unlucky with 780 classifieds. Which from my understanding were hitting 1300+ fairly easy. Temps never break 45C either. Though 6x fans, a pump, 3770k @ 4.5ghz, i think i'm approaching the envelope of the PSU, that or it's just old and dying.
It might very well be your power supply. I bought a random used GTX 780 classified off ebay about 3 months ago for a budget build computer for "retro gaming", and a backup to my x99 computer and it has 86.1% ASIC quality (according to an older version of gpu-z) and it runs 1267 mhz core and 7200 mhz ram on 1.205v perfectly stable. I had it at 7600 mhz ram for the first month but it proved to be quite unstable and I had to back it down yesterday to 7200 mhz ram instead. It's running in a system with a i5-2500K @ 5.0 ghz @ 1.608v.
I've been trying to tune the bios myself with kepler bios tuner, I have experience tuning a lot of GTX 600 series and I've set all the voltage where I want to for the 780, but it just never applies when I'm in games and I don't understand why. I'm trying to get either 1.212v or 1.225v but it just won't go over 1.205v with bios for some dumb reason. I have the old Classified Voltage Tool, and I can use that and manually set it to anything and it shows applied in gpu-z, and it runs hotter when voltage is up so it's doing it.. classified voltage tool has even let me apply like, 1.237v, 1.250v, 1.275v, 1.300v, etc, and they all apply. But.. not with bios. It's the darndest thing.
But I'm not really mad, 1267 core and 7200 ram is perfectly -fine- for a GTX 780. And it tops out around 80c - 85c with the stock cooler from EVGA. I'd love to water cool it but I can't find a block anywhere, this system has the custom loop in it already for the cpu and enough radiator for the 780, just no block. I'm not really familiar with how this compares with other cards, is this exceptionally good for air cooled 780's? Or just average?
Also, Blackops_2: Do you have a 3dmark firestrike score of both of your 780's together with your 3770K by chance? I've been considering getting another 780 classy card for this one at some point. I saw one on ebay for $154 just recently with free shipping.