There have been a few attempts at fusing the worlds of PCs and computer desks together, but this is something else entirely. NanoXia has housed two, totally separate high-end PCs into what they call: Project NanoXia.
Project NanoXia has two, fully watercooled, high-end PCs made up from an Intel Core i7-5960X, 16GB of DDR4 RAM, custom-built 440mm and 560mm radiators, and so much more. One system is powered by two NVIDIA GeForce GTX 980s in SLI, while the other is powered by two AMD Radeon R9 290Xs in CrossFire.
For more details, check out the Project NanoXia Facebook page.