H220 is only ~2C cooler. X60 fares better with ~6C improvement, but for almost double the price. Plus the added pump noise and usual water cooling caveats. Not that impressive.
Using a corsair h55 for my 1.32v 4670k cpu.
the mounting have to be one of the easiest out there.
yea on par for air within similar price ranges.
dualrad aio are better obviously but adds cost.