need a 70mm fan with LEDS, also gotta few fans questions

[Corporate Thug]

anyone know where i can get a 70 mm LED fan?
also, is there any difference between an 80 mm fan (or any any size) that pushes 80 cfm and 2 80 mm that push 40 cfm each??? thanx

 

[boyRacer]

the difference between having one fan instead of two same sized fans is noise... as for the 70mm fan... i havent seen one... maybe you can just use an adapter?

 

[Corporate Thug]

in that case, i think i'm gonna just get a tornado or SF II to use as an intake