@straw @Mek101 @itzzenxx Have you considered using a retired Dual Xeon E5 Rack Server for this type of work? It would chug through the workload just like a server should. It's going to be cheaper than having to get a regular computer to do the same. Redundant PSUs and Redundant jet turbine fans. These would be called virtualization servers but they can be used for offloading compile work for nearly anything.
@straw @Mek101 @itzzenxx Opteron 6270 or something like that was about the best performance per dollar. I was going for a dual socket because I couldn't afford or power the quad socket servers.
Make sure to do research on that particular server. Some servers have terrible firmware and other oddities. The Xeons are more powerful.