You can buy video cards for some, but they usally go for much more than say a desktop version would go. Same goes for harddrives. You have to get 2.5" rather than 2.5". I just don't know, that sounds sketchy, but I'm just not for used laptops to begin with... Too many things to fail.
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Desktop * Athlon X2 4200 | 2G RAM | 160G HD | 7600GT
Laptop1 * C2D T5550 | 3G RAM | 120G HD | Intel x3100
Laptop2 * C2D T5250 | 2G RAM | 160G HD | Intel x3100
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