Need help choosing a video card.

Unless your GFX is dedicated, you cannot change your GFX. Even if it is dedicated, the price cost would not be reasonable...
 
Yeah, changing the graphics card for your laptop would either be impossible or be prohibitively expensive. So you want to play games, its best to get a desktop system, laptops of designed to be mobile not machines with the huge amount of grunt needed to run games.
 
Agreed. Laptops have four major limitations that modern graphics processing puts a big strain on...

(1)Power. Battery life is always an issue, and GPUs are hungry buggers. Plus, even if you were able to have a super-long-life battery, trying to deliver enough power to the card would be a significant problem.

(2)Space. Have you seen an 8800GTS? Even the G92 version is friggin huge.

(3)Heat. My 8800GTS 512 idles at 55C, loads at nearly 70. Do you want that in your lap? Or three inches from your CPU? I think not.

(4)Everything else. Modern games reguire beefy processors and significant memory reserves. Which have to go somewhere, usually not in a thin-n-lite notebook.

That said, in laptop gaming, modest integrated graphics solutions reign. And they're okay. Play a little WoW, watch a movie. Leave Crysis at home, though.
 
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