yeah, I have the Antec 300w PS. it's plenty for my 1.2Ghz+VolcanoII, 1xTNT2, 1xSBLive!, 2 IBM GXP HD, 1xCDROM, 1xCDRW, NIC, and a floppy. and still running 5x80mm fans on top of it all. 🙂 So there's plenty of power. but how do you add 5fans on top of the 2? 😉 But at 1.68w (Top Motor, 2600RPM) each, I dont' think fans are going to be a power problem at all.