I'm upgrading to an AM5 setup and I'm curious about how much of an impact memory speed and latency will have. Currently, I have a Ryzen 5900X paired with a 9070XT and I use my PC for both productivity tasks like development, virtual machines, and video editing, as well as gaming. My X570 motherboard has a failing chipset fan, and I'd prefer not to spend money on a replacement unless it significantly boosts performance. If I decide to go with a Ryzen 9900X build, would opting for a cheaper memory kit like 5600/46 (16.429 ns first word) instead of the more ideal 6000/30 (10 ns first word) seriously bottleneck my performance?
3 Answers
For non-gaming tasks, the performance hit is minimal. In gaming, you might lose around 10-15% with slower RAM like 5600 CL46, but you'll see less of a dip with an X3D processor. The price difference between 5600 CL46 and slightly faster options like 5600 CL36 or 6000 CL36 isn't huge, so it's worth considering those alternatives.
Honestly, you probably won't lose much gaming performance going from 5600/46 to 6000/30—maybe around 5-10%. Since you're on a 9900X, your system should handle it just fine. If you decide to go for a 9800X3D later, you might notice more of a difference, though. I'd also recommend checking Facebook Marketplace or Craigslist after the holidays; you might find a decent deal on a 32GB 6000MHz kit.
In practice, you might see close to 0-3% difference, especially in gaming. The real impact of RAM speed becomes noticeable only with the x3d chips or if you’re monitoring frame times, FPS, or input lag closely. I upgraded from 5200MHz CL40 to 6000MHz CL30 and honestly didn’t notice any difference in gaming. For productivity, total RAM capacity is usually more important than speed.
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