It looks like it's a socket 1366 cpu. A socket that is no longer produced. You can still find boards for them, but they will be on the more expensive side.
You can "salvage" the GPU, PSU, CPU, Ram, etc... but if your going to buy a new case, ram, mobo, gpu, you might as want to update and get a new cpu as well. Make it something more future proof, and go with either a socket 1155, (Sandy/Ivy bridge) or the newest socket 1150 (Haswell) and make it a whole new build.