I have a Dell Optiplex 760 DT (Desk Top) that i got for free and i decided to slowly turn it into a decent gaming computer, i need help trying to find the best graphics card for it and possibly a new power source. All i mainly want it to play is Minecraft, Call of Duty Series, Alan Wake, Dead Island, Fallout Series, Grand Theft Auto Series, Zombie killing games, Etc. If you have any other tips about turning my Optiplex into a gaming computer feel free to tell me.
I know that my computer has only one PCIE slot and i would like to find one that fits it with no medications to the case and does anyone know of maybe a 400 watt power supply that will fit my computer?
I've also been looking at these video cards: ATI Radeon HD 3450 and ATI Radeon HD 3470. How good are they for playing the games that i want to mainly play?
Added (1). I have a 2.6 GHz processor, the question is Would i be able to upgrade it from a 2.6 to possibly to a 3.0 if not what would be the highest i could go?