it has a 250 w power supply. I am running windows 7 Ultimate 32-bit OS, 2gb ram, I have already updated to a nvidia geforce 210 but I want to be able to use 3 monitors since I have multiple monitors. I have already found a new power supply for 400 w and thought this video card might work.....EVGA GT 710 1GB DDR3 64bit Single Slot, Dual DVI 01G-P3-2716-KR