enzo matrix said:
Based on the little information you've given us, it is a safe bet. The power requirements of the 5870 will not be a whole lot more. And in most cases, with most setups, 750W gives you a lot of headroom, if it is a good quality PSU.
Thanks, I reckon I,m safe enough, just don,t want to ship out the coin for nothing,not sure what other info to give you 8gb ram 3.3 ghz quad processers, very new to this game,Thanks very much!!