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Searching for a cheap graphics card that will play Crysis

Downloaded and started playing the Crysis demo. On my integrated graphics MoBo, naturally I had to set everything down to low, but even then it can get choppy when in the jungle. And the graphics look so crappy I think - hmm, maybe I'll just play Far Cry. Tom's hardware has a great page where you can compare the performance of various cards with various games at various settings when searching for a cheap graphics card for crysis.
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