pci express card purchase help needed

i dont think you can upgrade ur GPU in lappys..

my laptop has pci express slot.. i think its must be there for some reason.. i heard that there is a graphic card which i can use in my this slot.. so i asked

try the techy shop
i think the nvidia geforce go series are for lappys
try the site as far as i know theres 7900gtx go for lappys, also in sli according to alienwares laptop