Nvidia's Optimus lets you pull a GPU out of a running system

@ 2010/03/03
Apparently, you can pull an Optimus-capable discrete graphics module out of a running notebook, then put it back and run a graphically intensive app, all without a hitch. That's because the system completely powers down the GPU module (and the associated PCI Express interface) when it's not needed, relying on the system's integrated graphics, instead.

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