Would the Xbox one be powerful enough to run the oculus?
You're asking the console double-edged-sword question of doom. The basic answer is obviously yes. It's "just" a 1080P output, i.e. it uses the same technique as split vision 3D and you get half a picture on your left eye at 960x1080 and half on your right eye at the same resolution. So long as a game can produce the correct image, the oculus rift can display it. But (a) we only have one HDMI port, so we'd need to hot-swap or have a switching box to our TV which is really nasty, (b) we don't have
any 3D game support right now, so the market size is zero for existing games. Oculous/Microsoft would need to push devs hard to provide 3D modes in their games, and finally games would probably need to be optimised for locked 60FPS, which in some cases might mean quality loss. You're already losing half your
effective pixels between a 1080P display and the Rift anyway, so reducing quality beyond this just for the relatively small VR market isn't going to go down well with most developers.
If you read up on the E3 2015 demos of Morpheus (which I honestly did
after typing the above), you'll see similar stories. Rough edges due to the scaling required for the lenses, poorer quality objects, but amazing immersion overall. Sony are doing ALL of the groundwork to make Morpheus work, and I still think that the tech demos that Microsoft have shown, e.g. Illumiroom and HoloLens, neither of which prevents you from drinking tea or tying your shoelaces, are going to be much more in line with the implied audience of the Xbox One.
IF there is going to be VR for the Xbox One, it will almost certainly be implemented directly or licensed by Microsoft in a later incarnation of the hardware, e.g. with dual HDMI ports, or a dedicated VR port. I love the
idea of the technology, but Microsoft would want it to be wireless and would no doubt be using Kinect for the tracking bits'n'bobs.