Originally posted by: oldfart
Didn't look at the fan blades. I'll check it next time it's apart. I dont remember it looking any different from the 1.6A fan. I think it was 7 blades?? I do notice the 2.4B fan is set to turn ~ 200 rpm faster than the 1.6A (~2450 rpm Vs ~ 2650 rpm) at idle temps. I can hear the 2650 rpm fan more. Its a little on the noisy side for my tastes.
