I did add another post mate. I did not have SLI enabled. So I am guessing that affected my score. http://forums.bit-tech.net/showpost.php?p=3522106&postcount=57
yeh i saw the second post. I was just surprised your score with one 670 was so low, especially with your cpu oc'd.
So after a main system update, and then acquiring a second 660, I'm up to 799 points, which having seen kencos score of 896 on one 660 has me concerned slightly, , wonder if my i3 really can't keep up with SLI. Just tested on a single card and I get 664 points.
Using something like EVGA Precision X, look to see if the GPU usages is up at 100% - if it dips lower consistently (or all the time) during those benchmarks then you may have a bottleneck unfortunately...
It's running 97% on both cards, then about half way through one card drops down to single figures, then slowly raises back up to about 40-50% usage.
Hmm. In my experience you should be getting about a 75% increase in performance compared to a single card. To me, that indicates two potential issues: Reaching a thermal limit of a GPU Unstable card (in the same way as an unstable overclock) From memory, the 'hardest' bit in the Heaven demo is about halfway through.
Looks like there's an instability somewhere, just dropped the clocks on one card to match the other, got halfway through heaven and usage on card 1 dropped down a little bit then the entire system crashed and restarted.
