If anyone is looking for a good value mid range card then you might want to consider this, which is what I just purchased myself:

http://www.dabs.com/products/xfx-ati-radeon-6770-hd-850mhz-1gb-pci-express-hdmi-7NQV.html?src=2?ReferrerID=tb&utm_source=td&utm_medium=affiliates&utm_content=TB00

When you consider that Dirt 3 and Deus Ex Human Revolution would cost you at least £20 upwards together it makes the card even better value.