Q: i have a 230v PSU and i was wandering if it would be able to power all graphics cards. if it cant power all graphics cards then which ones can it power? thanks. sorry my bad it is a 550w PSU
A: If it's 230 watts, that's not very much, especially if your computer has extra drives, expansion cards, etc. 500 watts and above should be enough for any single add on graphics card in a system. Be sure to check the requirements for the specific card you are thinking of getting. Some demand a little less power than others. The manufacturer's specifications will list the amount of power you need.