Hey guys, so at first I was going to get an EVGA GTX 760 but then saw that the SAPPHIRE R9 280x DUAL X was better for a similar price. I looked up the card on Sapphire's website and it said that a 750w PSU was needed. I was wondering if the PSU I already have would do fine or if I would need to change it in order for it to run.
As long as your on a single card, I can't see you needing any more than a high quality 650w honestly. Such as the 650w version of what you currently have. If you had an Intel build you could get away with the 550w unit. The FX chips are know for eating up signifigantly more power while overclocked.