I am running two EVGA 980ti sc cards in a Corsair Air 540 (so they are getting plenty of air flow) and i am not currently over clocking either. For God knows what reason one card ALWAYS runs 10c higher than the other card. I have custom fan curves set to run 100% fan on 70c gpu temp, and i have flipped the cards too its always that specific 980. Maybe worth mentioning i ran corsairs updated cooling bracket with cpu cooler to do a make shift water cooling gig on the cards and worked but STILL had that one gpu 10c(+/-). Both cards have the same amount of thermal paste good brand etc. i cant think of what it could be. Ive heard of cards being faster or slower clocks from the factory but higher or lower temps!? No way, please help this has been one of my biggest headaches!