I will double check to make sure my ram in it now is a 16GB stick because normally in these Asus gaming PC's, Asus puts them across 2 sticks. It's not common to find big ram sticks in pre-built desktops these days.
EDIT: I have confirmed that my PC for sure has (1) 16GB stick in it now. Nice! It has 4 slots and I'm wondering if my PC can take up to 64GB of ram.