I have several high amperage fans coming. I know I can hook them to a molex for full speed, but how can I control them? All the controllers have a limited current well below what these draw. Here are the fan specs: Papst-W2-G110-AK67-93 Model No:W2-G110-AK67-93 Rated Voltage:12 Operating voltage range:7 to 14*** Rated current:1.50 A*** Rated rotating speed:4,400 RPM Air flow:158 CFM Static pressure:20mm/ 0.79" in H2O Noise:58 dba External Height:120mm External Width:120mm External Depth:38mm Bearing Type:Ball Sensor wire:Yes Sensor type:Tach Frame materialowder coated alloyed aluminum Impeller material:A4 Steel Motor protection system:Current cut system (with reverse-connection protection) and Papst-6224 NM Nominal data Type 6224 NM Nominal voltage [VDC] 24 Nominal voltage range [VDC] 12 .. 32 Speed [min-1] 2850 Power input [W] 12.0 Min. ambient temperature [°C] -20 Max. ambient temperature [°C] 72 Air flow [m3/h] 350 Sound power level 5.7 Sound pressure level [dB(A)] 50 ml = max. load · me = max. efficiency · rfa = running at free air · cs = customer specs · cu = customer unit Subject to alterations Web data I think I might just run the 6224 at 12v from molex...as an intake, but not sure. I also noticed that fan controllers don't put out 12v, but -10% usually which would be 10.8v like my Sniper case's built in controller does.