What are your system specs? Your power supply will almost never pull its full load so the size of your power supply is pretty unimportant, the components in your system tell us what your likely power draw will be, also list your PSU make a model too. And if your power supply doesnt have active PFC and instead has a red voltage switch post the volt amp(VA) rating of your UPS as well.
Yep ur fine bro throw er in and let er rip! You could use a 1200w psu on a system that will only use 200w because the power supply will only put out the power that the system needs. Actually a bigger supply may be better because it will have to work less which in turn means less heat
I am using 600 watts UPS and using 2 ceiling fans, 3 -24 watts lights, 1 420 watts CPU dual core with 17inch LCD, 1 CoolerMaster eXtreme 600W CPU with 19inch LCD core i5+gtx260...Last up 2 2hrs easily..190 ampere Battery