I have one of the early models of the x51 from about a year ago. Cheapest option too, so i3 processor and gtx 640. I want to upgrade my GPU and the more I'm reading into it, the harder it seems with the PSU and case size of the X51. Is it worth it to move components to another case and get a new PSU? Or is there a way to solve this without a new case. I would like to get the gtx 760 GPU. Does this mean i will have to get a new motherboard and CPU? Never upgraded a computer or built one so sorry if these have obvious answers.