Ok so I have an hp elitebook 8540w, 15.6" screen, 160GB corsair SSD, 8gb ddr3 mushkin ram, and a crappy quadro 880m. Regardless of what hp says, is it possible to upgrade to say a 460m or something like that? I understand I would have to remove the actual chipset from the pci card and replace it and it would be a pain in the ass, but regardless, is it possible?