A lot of people are using cases with more spacing (or no case at all), so they can leave empty slots between the double-wide cards.
Have you manually ramped that hot card to 100% fan? It's noisy, but it might help you out. You can also clock it differently than your other two, and spend that juice/cooling on bumping the cooler ones.
I'd imagine a good balance would be where all three temps even out at a level you're comfortable with.
That's a good idea. I've messed with the clock rates/mem rates, but it applies it to all 3 cards, need to remove sync.
I couldn't find any mobos out there that have enough space to fit 3 cards + leaving room between cards, this is about 1/2 inch apart if any from each-other.
I've ramped it up to 90%, but I dont want to do 100% if im running 24/7 because the amount of cycles in a fan (itll die on short notice if I do 100% compared to 80/90%) More in it for the long run than short, Ill mess with the middle card clock rates, thanks again buddy!