Razer Blade looks like an awesome 14" notebook: 4 lbs, GTX 765M with 2GB GDDR5. The Razer Blade is thinner, one lbs heaver, but has a GPU which is probably around 5x faster than a MacBook Air. Kotaku says this Razer Blade will be $1799 at launch.
As of this post, Wikipedia does not have complete specs on the GPU, saying just GK106 768:64:24 config with 192 bit bus (with no clocks). The big brother Razer Blade Pro also sports a 765M, and in this larger config (likely higher clocked because of more cooling) is quoted as 1.5x to 1.7x faster than prior Razer with a 660M. So the Pro version is likely around 5x the performance of an Xbox360.
As of this post, Wikipedia does not have complete specs on the GPU, saying just GK106 768:64:24 config with 192 bit bus (with no clocks). The big brother Razer Blade Pro also sports a 765M, and in this larger config (likely higher clocked because of more cooling) is quoted as 1.5x to 1.7x faster than prior Razer with a 660M. So the Pro version is likely around 5x the performance of an Xbox360.