The primary one usually runs a little hotter too because its airflow gets blocked by the lower card. And the case gets hotter with 2 especially if they arent reference designs. You could turn the fan up if you wanted but nothing wrong with those temps.
Idle temps don't really matter as far as "safe" is concerned
ok 80% fan speed at 52c idle is this ok also if it is my ears can take it and my case buffers sound alot. is this ok and will the fan speed go up if it needs to now? or not? like if i run furmark? 51c!! now yay.
Furmark is a VERY stressful test, you'll never see such high temperatures under gaming loads although you should watch the temperatures if you are part of the folding@home community, it's also a demanding application.
That said, your current temperatures are good, rest assured no harm will come to your cards, they're quite, quite safe.
FYI, yes, my '6950 has a Zalman cooler, but I work odd hours and the household was giving me grief over the stock coolers noise !
Your idle temps are 100% normal at 55C if you have 2 monitors hooked up. When the Radeon's have two monitors hooked up, the clocks on the card do not downclock like normal and cause 10-15C more heat. Your load temps are fine as well. Unless you want a loud system, I'd not mess with it.
As was stated earlier, idle temps have no bearing one way or another on "safe" really. If your load temps are good (which they are) then you're fine. They are what matters. The only way idle temps would matter with regards to "safe" would be if they were higher than load temps, which is impossible.
Hi guys, a bit old but I'll post anyway. I have one 6970, and once i start up my pc everything is normal, and after I start playing then stop, activity wont drop below 51% and temp is 82°C+ Something must be wrong.