Forgot to mention, the 8800 card's heatsink fan is set at 59% operation (default DOH). In the nvidia control panel go to "Adjust GPU Settings" you'll see the "GPU fan settings". Select "Direct fan control" then set to 100%, have to do this for both cards. The second card can take several tries to stick. It'll lower the running temps 6-10c. And these cards run HOT! They'll  operate at 80c with no problem, but that's hot. I got em running pretty comfortable, and it's 73°  F ambient in my room at the moment, but that's at 99% fan speed. You'll notice when  you select 100% it'll set at 99%. This setting isn't permanent either, have to do it upon every boot. They need to fix that, but you can get fan control apps that stay. 

8-)