I run Skyrim with over 3,000 mods. While the stated minimum is 16 GB of RAM, in practice Skyrim alone regularly uses around 18–25 GB. I also alt-tab to process images for work without closing the game, which pushes total system memory usage well beyond what 32 GB can comfortably handle. I mean, sure, I could have gone with 32 GB and closed Skyrim every time I needed to work, but why would I?