Ok i thought i posted this but i guess i must have exited out of the window before hitting submit.
I replaced my Thermalright Ultra 120 Extreme with a Corsair Hydro H50 and just wanted to post that it does fit in the PC-K62.
I had some trouble installing the back plate on the H50 because of the opening on the back of the mother board tray not being big enough but it did fit.
Temperature Differences are:
Thermalright Ultra 120 Extreme (NO Fan).
IDLE Temperature:
CPU 21 C
CORE #1 28 C
CORE #2 28 C
100% CPU Load Temperature:
CPU 31.3 C
CORE #1 39.6 C
CORE #2 30.8 C
Corsair Hydro H50 w/Corsair Fan
IDLE Temperature:
CPU 18 C
CORE #1 26 C
CORE #2 28 C
100% CPU Load Temperature:
CPU 26.4 C
CORE #1 34.8 C
CORE #2 28 C
I used Everest CPU Stability test for 30 minutes each time to get my results. Don't know how accurate Everest is but those are my results!