2 should get around 75C load at very highest i would have thought on tripple, no way it would be getting any were near the 100c the stock cooler gets and silences them aswell, 'trubritar' on youtube has just done a review on the new koolance 480 block and at 825 core clock (his OC) a single was maxing out at 53c on a tripple(im pretty sure thats what he uses in his reviews), 752 core (FTW edition) was 48c and 725 core (Superclock) was 47c