>2nd concern if i choose HD 7770 or GTX 650 can i add/use a molex to 6pin power adapter on my unit,is it advisable,can my unit handle this or it can harm my unit because of power consumption?,BTW i dont have enough budget to upgrade my PSU so maybe I am away from that decision,
-in case i use a 6pin connector/adapter what whould you prefer for me a HD 7750 or a GTX 650 and what brand and version?,you can include more brands just rank it
>thank you in advance buddies,hope you'll help me on this
the 7770 also requires a 6 pin PCI power lead (i had one a little while ago, but got pissed off with crap drivers for it and went nvidia!) some GPUs that require PCI power will have a molex adapter so you can draw the feed from there, but i would agree with andrewcarr and get yourself a new PSU to go with. i'd say buy the nvidia card, just make sure you get it from somewhere that supports the Step-up program and you can upgrade it for the cost of the difference between cards if you play your cards right!