When I say the coolest, I mean just that. You won’t have any problems with overheating CPUs if you have one of the Hardcore PC Reator. To solve the heat problem, the motherboard, CPU and GPU has been submersed in oil.
You don’t have to stop at it’s mouth watering looks but this PC comes fully loaded with redundant power supplies and solid state disc drives, Nvidia nForce 790i SLI Ultra graphics unit. Go see how good it looks at this article from Maximum PC.