A 1000mA supply should be able to run 3 or 4 of those fans you mentioned before (the 80 and 120mm). Those use 250mA or almost 300mA. You just divide the current the fan uses into the supply total.
There are other fans that will do better, the 2 that Dan mentioned earlier are much lower in power consumption. Although they note 2.52 Watts to start up, which is about 210mA. So I still wouldn't try more than 5. You don't want the supply to get too hot.
It's all a trade off between this and the air flow (CFM), and of course noise.
Last edited by dllewel; 09/07/06 10:09 PM.
