From what I've seen/read, external USB video processors are not generally good for gaming. Generally speaking, given the power requirements and cooling that would be needed for any serious performance, the external chips are very limited, low-end GPUs.
The systems that use your internal GPU to send data through USB involve a lot of encoding/compression and decoding/expanding and also suffer a large performance hit.
At this time, external GPUs are mostly of benefit only to those who want to spread productivity apps over several monitors, but only have a laptop or a GPU that doesn't support multiple monitors.
On the other hand, GW could "work" with an external unit (maybe), in the sense that it wouldn't crash, but it would be a slide-show and be basically un-playable in a normal sense. It could be useful for transferring things between accounts or selling stuff in Kamadan and other less intensive tasks, though.
Edit - if you do find an external unit that sounds promising, be sure to read reviews.
Last edited by Quaker; Dec 15, 2011 at 04:10 PM // 16:10..
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