The Nvidia GeForce 305M or G 305M is a laptop graphics card for entry level (small sized) notebooks. It has a similar computing power as the GeForce 9400M (ION) integrated chipset but features dedicated graphics memory (up to 512 MB connected with a 64 Bit memory interface). The core of the card is based on the GT218 architecture and supports hardware DirectX 10.1 effects.
The card supports PureVideo HD to decode HD videos with the graphics card (like Blu-Ray movies). PhysX is not really supported by the card, because of the lacking performance.
The gaming performance should be only a bit better than the 9400M G and therefore only suited for non demanding games or games in low resolution and detail settings. It is compareable to the ATI Mobility Radeon HD 4350. Therefore, gamers wont be happy with the GeForce 305M.