"and features full PCI Express 3.0 support as well as EEC memory plus DirectGMA support."
Hmmm, EEC memory support.
That's Error Erection Code ... meant for use with the new Oculus Rift p0rn goggles...
Workstation/HPC cards are a standard length. I suspect it's a single GPU, and requires additional molex connectors and jiggawatts at the PCIe slot.