I don't think you can (economically) fit a graphics card in a laptop.
Adding more memory will increase the memory available to the rest of the system; the graphics will continue to use up to 256mb
Surface Pro 5 News - release date, UK price, features, specs
Animator Emanuele Kabu’s psychedelic video is a stunning tribute to Lisbon city
Best Mac antivirus 2017
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.