FWIW, the stock X1800XT/X1900XT fan uses 0.42 amps. An 80mm Delta EHE 80 cfm fan typically uses about 1 amp. The 100+ CFM Delta UHE fans run around 1.5 amps. I've got the EHE hooked up to my X1800XT, it sure makes a lot of noise that can be heard clear across the house when I crank it up. This 2...