Re: ASUS A42J Vx040d possible graphic card upgrade?
If the gpu's are integrated, that means you would need a new motherboard with new/better integrated gpu's to 'upgrade' from what you have. Making sure that all other port locations and other physical and electrical specifications are met. Definitely not a cost effective way to get slightly higher performance from your current chassis/screen/keyboard combo.
Much better use of your time and energy is to sell what you have now and buy what you really need (either new or used).