how much UPS should i but for a 650w power supply

MEgamer

what amount of VA should i buy for that amount of power supply ?

xazbrat

There is a general rule of 60% when figuring out how big of a UPS you will need. Basically, take 650w/.6 and you find out you will need a UPS with 1100 VA or so.

Here is a tool on this page too which may help. http://www.apc.com/template/size/apc/index.cfm?CFID=36224990&CFTOKEN=17324460

Flakk

I recommend an 1200va UPS.