Graphic card upgrade for toshiba L645

[1432shadab]

Hello,
is it possible to upgrade my graphic card to minimum of 512 MB.
I have satellite L645
Part no.PSK0GU-0EL026 and serial number.5B315764W.
please help me out.
Thanks

 

[GreenDutchAlien]

Don't think so, it's a laptop and you can almost never change a gpu on a laptop, only very expensive models.