How much is too much?

[sidwell8]

I want to add 2 extra 12v 80mm fans to my case to blow the air across the bottom of my case and then as it rises from getting warmer further from the fan it will be blown out by the fan on the back of the case.

My question is, will i have enough power? I have a 450 psu but i dont know if that is enough for 4 12v fans in total as it came with a fan built onto the side as it is a clear panelled case

 

[patonb]

You should be just fine, but without knowing your full system, its hard to be 100% certain