I'm planning to build a shuttle system for a friend and the SN21G5 seems to be the cheapest one (£210) to support an AMD x2 3800+. I plan to pair this with a x1800xt but I'm a bit concerned about the heat generated and also whether the 250w PSU will support it. Is the SN21G5 a good choice and should i get a slightly lower power graphic card like the 7600GT or the x1800gto?
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