ATI Radeon HD 4800 Series -- The Game Has Changed (Video) 1 discussions AMD introduces the ATI Radeon HD 4850 and HD 4870, offering unbelievable gaming horsepower for enthusiasts and alike. Featuring exceptional gaming performance at unbelievable prices, NVIDIA is beaten. Tags: Game Has Changed ATI AMD NVIDIA RADEON GEFORCE HD4850 4850 4870 HD4870 4800 X2 GTX GTX260 9800GTX Gaming DX10.1 Graphics GPU Videocard Video Card Crysis Grid Bioshock