Nah you can get a GTX660 for £160 and that'll do well for 1080p high settings on anything out at the moment, and probably the next couple of years of gaming too. What kind of money are you looking at putting on it? You could throw together a decent enough machine for ~£500. If you use a really high resolution display (above 1920x1080) and/or want 3D and/or triple-screen setup then you'd need to be throwing quite a bit more money at it.