Since this is a developer unit, there is only so much I should mention. I won't say what the GPU is, but it has more vRAM, more shaders. It uses both MXM slots and both power input cables with a modified vapor chamber. The part that sucks is it obviously will not be available in SLI. I think it will rape single 1080, but probably won't beat 1080 SLI, but I guess we shall find out what this bad boy is made of soon enough.