Should I get 32GB at 2133MHz or 16GB at 3600MHz for my PC?

For most people, 16GB at 3600MHz is the better choice. The speed difference is massive for CPU-heavy tasks, especially Ryzen chips, and you’d be leaving 20-30% performance on the table with slower RAM. Only go for 32GB at 2133MHz if you actually need the capacity for things like 4K video editing, massive virtual machines, or multiple Docker containers. Figure out your memory usage first—you can always add more sticks later.