Right now I have an Alienware Aurora PC from DELL (Yeah I know I bought a PC im an idiot lets move past that.) It has Dual Radeon HD 5770 cards in it and i've had nothing but dumb problems with it when it comes to gaming and all that. My question is, will I get better performance from replacing both of the ATI cards with the nVidia GTX560i card that I have been looking at?