We carry out an identical movement and measure the framerate with fraps. The test was done in high quality, complete dynamic lighting, maximum details (anisotropic filtering 16x) and foliage shadows. S.T.A.L.K.E.R. uses an engine based on differed rendering, which is fundamentally incompatible with MSAA and makes the use of anti-aliasing impossible – or at least this is what we thought! Despite everything, Nvidia ended up finding a solution. The 1.00006 patch was used.
The Radeon HD 4850 is equivaent to the GeForce 9800 GTX while the performances of the GeForce 9800 GTX v2 increase proportionaly to its higher GPU frequencies thus gaining 9%.
The Radeons still do not enable the use of anti-aliasing.