11-03-2013, 04:02 PM
HD7950 is not "Best bang for buck" as it's performance just few % better than HD5870 in all terms when talking about hash cracking (perf, TDP) and price as blandy wrote 2x+ times higher. Not everyone here can go with top cards, so possibly better to look at ebay where used HD5870 goes for as little as 100USD. But still, if we talking about wide purpose usage like playing games so yes, HD5870 is ancient and better to look at 7 series. And also an advice - try to 'skip' 6 series.