I'm trying to overclock my 2500+ but my power supply is undervolting as my proc takes on increased load. I've heard of UPSs being able to use there battery power to "clean" the power coming from the socket and stabilize the power going to the PSU. What is the minimum size UPS I would need to accomplish this for my 480W PSU (as in sig)?

Check this out:

UPS Selector

It will tell you exactly the size you need, very useful when deciding on which one to buy.

Hey thanks! I appreciate it.

i went that site to see what kind of ups i need,

i would need one ups with 3 extra batteries just for my main rig and all the networking stuff i have, and that would not include 3 other comps i use a lot.

total price over $3000