I accidentally ended up with four 16GB DDR5 sticks—two from a bundle and two I purchased separately—for a total of 64GB. I've heard that running four sticks can make it harder to reach around 6000 MT/s, especially on newer platforms, and may require lower speeds or manual tuning. Should I try to sell or trade them for two 32GB sticks, or is it worth testing all four first?
4 Answers
If you don’t regularly use more than 32GB, sell the extra pair and keep two matched modules. If you do need the full 64GB, test the current setup first rather than assuming it will be unstable. Four sticks are still dual-channel on typical desktop platforms—they just place more stress on the memory controller.
Two sticks are generally the better choice for DDR5 on a dual-channel platform. Four modules put more load on the memory controller, so reaching 6000 MT/s with the advertised timings is less likely. You may need to run them at 5200 or 5600 instead, depending on the CPU’s memory controller and motherboard.
Try all four before spending money. Enable the memory profile after confirming the system boots, then test it for stability. If it runs reliably at the rated speed, there’s no practical reason to replace the kit. If it fails, reduce the speed or timings until stable.
If you genuinely need 64GB, keeping the four sticks is perfectly reasonable. A slightly lower memory speed usually has a small real-world impact, particularly for gaming, while having enough capacity matters much more than chasing the maximum memory setting.
Benchmarks can show a difference between 5200, 5600, and 6000, but for most workloads it’s only a modest performance change. Stability is more important than the last few percentage points.