Originally Posted by CorsairGeorge
The 300R wasn't really designed to house an H100 internally completely, but the 550D should work with like 99% of the motherboards. During the design phase we used over 20 different motherboards and it worked with each one. The P9X79 WS board just has that heatsink about 1-2mm too high. :\
Were any X79 boards tested during the design phase? I ask because most ASUS X79 boards have the same problem as the WS, the Deluxe, Pro & Standard models have a silver & blue heatsink that [annoyingly] dangles at the top. I've been tempted to ditch my WS board in favour of one that will fit, problem is, I haven't found an X79 board that'll fit in the 550D with my H100i.