i have a coolermaster and it sucks..........
first off, its only a 50mm fan that spins at about 5000rpm, so it only pumps out about 10cfm....
the heatsink is sorta sad too..........took my 600 to 900 and i ended up with 55C....not good
the alpha is MUCH better
60mm fan pumps out TWICE the cfms
and it has 300 some pins compared to coolermasters like 50 fins