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Not really...even BFBC2 will bring the 5750 to its knees with 1920 res 4xAA 16xAF.I tend to think a HD5750 would be enough for your needs (well for most peoples needs if the truth be told, just look at the reviews, just because its the lower part of the mid range doesn't mean it's a slouch) all the way up to 1080p resolution.
460 for sure
460 here