Will a better PSU make a difference.

Hi.

My PSU is moribund. So I'm getting a new better model one from corsair.

It won't change my purchase but I'm interested to know, will a new and better PSU make any difference to how FSX runs on my computer? or will it just power my computer in a more efficient way without making a difference to the smoothness or frame rate of FSX.

Thanks

Steve.