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Actually that's a bad suggestion, as the 5830 only got half the ROPs of 5850/5870, so overclock would still struggle to compare to 5850. With that said, the 5830 is an ok card at £140, but performance wise it simply ain't up there with GTX460 and 5850.You could consider a 5830, then overclock that to 5850 clocks (i think its possible) that would be a fair bit cheaper as OCuk have some cracking deals on at the moment, but if thats out of the question i would go with the 460 but that is my personal opinion.