Allen S said:
OKay. The second one though has a higher RPM though. Not sure if it makes a difference
It does make a difference, but it is yet another nail in its coffin. It has a higher RPM because the second one (Masscool) has a fan that is physically smaller (70mm) than the Thermaltake one (80mm) so it has to work harder (and louder) push the volume of air over the heatsink.