When you get to scale, you can start doing things like manufacturing displays with higher PPI near where the lenses are centered. That way you have the same num

When you get to scale, you can start doing things like manufacturing displays with higher PPI near where the lenses are centered. That way you have the same number of total physical pixels but a higher resolution contributing to the image. You can further reduce the computational costs by using foveated rendering(http://research.microsoft.com/en-us/um/people/johnsny/papers/foveated.pdf http://research.microsoft.com/en-us/um/people/johnsny/papers...). You can use low-latency eye-tracking to spend more time rendering the portions of the frame that the user is actively looking at. I think the combo of falling gpu prices, and clever hardware design means we will probably see headsets with effectively higher and higher resolutions sooner rather than later.