So the guys at the Notebook Review forums found it: the Nvidia GeForce 9500M found in the Dell Studio XPS 13 is not a single graphics card, but two: an integrated GeForce 9400M G plus a GeForce 9200M GS with 256 MB of dedicated memory, working in a Hybrid SLI configuration. The expected performance is higher than that of the 9400M G alone and lower than a 9500M GS, so the naming seems right, but maybe the actual performance is not as high as you expected when you saw the 9500M model number.
In addition, as Hybrid SLI is only supported under Windows Vista, so users of other operating systems will only be able to use one of the cards (probably the 9400M G).

Source: Notebook Review forums and Dell Studio XPS 13 setup guide (go to page 52).


