Valve has announced a rather significant update to the SteamVR Beta that will be a boon to owners of both current and future virtual reality headsets. The SteamVR runtime has been upgraded with a new auto-resolution scaling routine that is able to enhance your visual experience based on how powerful the GPU is in your current gaming rig.
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Source: Hot Hardware – SteamVR Will Auto-Scale Your VR Resolution Based On GPU Muscle