No it wont at 75C but it makes me uncomfortable seeing the temps that high. If you get close to 80c you will start wearing down the life of your cards. Can you space the cards out more, move them to an open air setup, or find a way to push cool air or pull the hot air away from the cards?
If not maybe ramp up your fan curve to 75-85% to see if that helps.
ill make more space between the GPUz
so i tried to bios mod them after i finish claymore keep on telling me no amd cards were found and i cant do anything in afterburner can you hep me with that did i do somehting wrong while moding i mean i just copied the straps that i guess everybody is doing and working fine with them !!
but apparently not me