Can anybody recommend a good touchscreen laptop with a dedicated GPU? (Nvidia)

It seems that there are either full-blown standard laptops with integrated GPUs (good for gaming) or touchscreen laptops or hybrids (with detachable touchscreens) that only have a measly Intel 4000 integrated GPU....I plan on emulating Nintendo Wii, Playstation 2 as well as running all the latest games (battlefield, call of duty etc) and GTA4 and it would be nice to have the best of both worlds but I can't seem to find a laptop out there that is right for me....any suggestions?