Just released today and Ive seen the reviews, this card is FAST. Fastest GPU out there and even though cayman is set for release (who knows when...) I dont think it can match this performance. It matches the 5970 an that is a dual GPU card. Also the picture is a 480 because google didnt come up with a 580 picture
So for the money £399 seems like a lot but its even cheaper than the 480 in some places plus its £50 cheaper than the 5970 when matching performance wise.
nVidia GTX580 The world's fastest GPU, bar none. Blasts past the GTX480 with room to spare. Tessellation processing is up more than 20% and the combination of architectural enhancements, vapor chamber cooling and increased clock speeds make for a fantastic combination. OWN IT FIRST. nVidia GTX580 • 512 Full CUDA Cores • 1.5GB 384-bit GDDR5 • 4 Gbps Data Transfer • Dual DVI & mini HDMI Over 30% faster than GTX480 tested in 3DMark Vantage nVidia GeForce GTX580 -->· 772MHz Core Speed -->· 1.5GB GDDR5 Memory (384-bit) -->· Draws up to 244w power -->· 27cm long -->· Needs 2 slots -->· 3-Way SLi Capable -->· 2x DVI and 1x mini HDMI