Nvidia has launched the Geforce 8800GTX Ultra, its latest high end DirectX 10 graphics card.

It's essentially an overclocked Geforce 8800GTX and looks very similar. The GTX Ultra's shader processors are clocked at 1500MHz, up from the 1350MHz present on the GTX. Core speed has been increased to 612MHz from 575MHz and the GTX Ultra cards come with 768MB of 2160MHz memory, up from 1800MHz.

The cards cost £460-£500 and will be available at e-tailers and retailers worldwide by May 15th.

Nvidia claims that in game testing with an Intel X6800 and 2GB performance is up by an average of 12.7 per cent over a range of games and resolutions. Expect a PCW review soon.