how do i know how many watts a fan produces?

[Emericana]

i have a 6w zalman rheostat fan controller and i would like to purchase a 80cfm Delta and hook it up to it. will this work or is the 80cfm delta too many watts?

it works fine now on the delta 38 60mm.

i read on these forums that it is better to get a bigass 80mm fan and use a rheostat than it is to get a normal speed (like 40cfm or 50cfm) fan and not because the vains on the fan helps move the air better. is this true?

i would like to put this on a ax7 or slk800 if i can get some cash quickly.

 

[fletch]

well i do believe the wattage draw would be the voltage * amperage, so 12 * amperage (i think its usually marked on the fan somewhere...)

 

[Emericana]

can anyone tell me what it is for the delta 80 if you have it? the vantec tornado is wayyyyy too loud for an additional 4cfm (4dba louder!)