How hot should my GPU's be?

coolmanfoo

Honorable
Dec 28, 2012
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So i just installed SLI 680's my top card hovers around 74-77 under load and the bottom card is like 65-70 under load. they idle around 33. Is this normal and safe or should i try to do something to improve airflow. thanks everyone in advance!
 


the gpu i have my monitor plugged into is the one that gets around 75-77, the temps of my cards differ about 5-10C under load. at idle they are identical
 
one more question! when i first plugged in my new 680 (top card running 77c) it smelt like a slight plasticy burning smell, it doesnt seem to be there anyonemore. Think it was just the new card being broken in or something i should concern myself with?