GeForce 8400M GS is an entry-class level GPU part of the 8000M Series released by NVIDIA, in 2007.
Very demanding games(e.g. Metro 2033, The Witcher 2) and even demanding games (e.g. Crysis 2, Skyrim V)are most certainly unplayable. Moderate and less demanding games, like Call of Duty: Black Ops, might be playable smoothly at the lowest settings.
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