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Compared to the slower 8600M GS (and 8400M series) the 8600M GT supports a few more video features (see comparison chart). It supports (HD) encoding of H.264, VC-1, MPEG2, and WMV9 video content. The integrated PureVideo engine is one of the advantages of the 8600M GT.

The memory clock speed depends on the used memory: 400 MHz for GDDR2 memory and 700 Mhz for GDDR3 (which is noticeable faster). Pixel- and vertex-shaders do not exist any more but 32 of the so called stream processors do the graphic work (which up to now pixel- and vertex shaders did). The particularity of this video card are the "Unified Shader". The 8600M series is one of the first-laptop-GPUs, which support DirectX 10 and accelerate the H.264-decoding of HD-movies. Gamers, who every time expect supreme frame rates, should get at least a 8800M card. Still, the shader power is not sufficient to display DirectX 10 effects of games like Crysis fluently (Crysis will only run well in low details). Therefore, games like Company of Heroes, Supreme Commander, or F.E.A.R can be played fluently with high details in a resolution of 1024 or similar. Depending on the used graphic memory and the clock speed, the performance is between the 7600 GT and 7900 GS video card.

NVIDIA GeForce 8600M GT is the DirectX 10 capable successor of the GeForce Go 7600 GT for laptops.