m4800 upgrade suggestions?

Hi All.  I've ordered a used Dell M1200 video card (45W).  Since the laptop will be open, I'm wondering what can/should be replaced.  It's Windows 10 (1909).  Fans, battery, 512 SSD and other hardware seem to be working well.  CPU is i7-4810MQ - way to expensive to upgrade for little gain.  I think 16 GB RAM will hold me for a while.  Thanks, JB