Yo, I recently purchased a GTX 770 and have been running my old card (Radeon 7770) off of a NSpire 500w PSU (pretty unreliable, I know). This PSU only has 1 pcie 6 pin, so was wondering should I buy a adapter and attempt to run it off this PSU, or say the hell with it and buy a new one? I know the reccomended minimum for a 770 is a 600w, so what are your reccomendations (if at all needed) for a PSU under, say $70?