A:Answer I have not added another memory stick, yet, but I intend to. Every computer I have built or bought over the past 39 years (including an original IBM PC) has been upgraded to the motherboard maximum RAM. That has always improved performance. I bought the HP Omen to run my Oculus Rift. I have installed and run some amazing video benchmark programs from Unigen (Valley, Sanctuary, Heaven) that have performed well at over 100 FPS. This with ‘only’ 16GB installed. If you are just running everyday tasks like internet browsing or Office apps 16GB will be quite adequate. Hopefully a gamer will answer your question about gaming performance better than I can.