With Nvidia's next-generation Fermi graphics cards now just a week away, some new details have trickled in courtesy of Turkish site ccording to VR-Zone, internal benchmarks reveal that the GeForce GTX 470 and GTX 480 are some 5-10% faster than the Radeon HD 5850 and 5870 respectively. Such estimations are of course unofficial, but we'll have clearer idea of the value behind these cards when benchmarks start popping up after next week's launch.