CPU configuration for N560GTX-Ti Twin Frozr II 2GD5/OC

a case with enough expansion slots(depends on card type),a motherboard with SLi support,a quality 650w psu will run 560ti SLi.

it will really depend on what kind of budget you have available and what kind of CPU are you thinking of buying, you only need a motherboard that is SLI ready with 2x pci-express > 2.0 and you will require a cpu that is the same socket as the motherboard, an advice is going with the new ivy bridge processors they use 1155 socket, if you give a budget it will be easier to list some components.