If you’re like me, you’ve probably wondered how much RAM speed actually matters for gaming—especially in the DDR4 world where most people say capacity is king. In this video I break down that exact question by comparing a “normal” DDR4 speed (3000MHz) against the absolute basement speed for DDR4 (2100MHz). I’m using 16GB since that’s the recommended amount, and because I didn’t have extra compatible sticks lying around, I changed speeds artificially in BIOS by swapping memory profiles. To keep it real-world, I ran a mix of benchmarks and an actual game test at 1080p high settings. On my GTX 1650 + Ryzen 5 1600 setup, the gaming results were basically a wash: 127 FPS average at 3000MHz versus 123 FPS at 2100MHz—close enough that normal run-to-run variance could explain it. The paper benchmarks did show small drops (about ~1% in Cinebench and ~2.8% in Heaven), but nothing you’re going to feel while playing. The takeaway: within DDR4 (and honestly even DDR5) you shouldn’t buy faster RAM just for gaming FPS—upgrade capacity first if you need more memory.