4810MQ CPU, 980M GPU (no OC on either), 8GB, Win7 - and sadly, Nvidia Optimus. When it (OSVR) works it's awesome, though the last time that happened was pre Engineers, and that update brought my non VR FPS to about 40ish in ports / planets / RESes.
I had some time with a Vive and yes, the FOV was a bit better and the head tracking MUCH better but nowhere near 600 EUR better. If both devices worked (atm OSVR is (again) just a paperweight, but that's down to my ineptitude rather than a hardware fault) then I would say OSVR is well worth the 350 EUR and the Vive worth tops 450 EUR. I would never part with nearly 1000 for it, utter madness until Fdev irons out the kinks, but by then we'll be pre-ordering Vive 2.0 I suspect...