The machine is a configurable in either a Six-core or Quad-core Intel Core i7-based system using liquid cooling and overclocked at speeds up to 4.15GHz. It has seven PCI-E x16 slots on its Intel x58-based motherboard and can take up to four dual-slot or seven single-slot graphics cards. Judging by the sheer number of GPU-based computing options seen at SIGGRAPH this year it is definitely understandable why you might need an SLI setup in a workstation.
So essentially what BOXX is bringing out is an overclocked system that uses workstation graphics instead of consumer cards. A system that, according to its specifications, has a 1200 watt power supply.