The ATi HD series consists of the R600 and R700 GPUs, R600 GPU belonging to 2000 and 3000 series radeon chipsets and the R700 belongs to the 4000 series chipsets. Both the R600 and R700 GPUs support direct x 10 rendering. The R700 GPU from ATi has been a great success and has put ATi back in the race to be the best.