I'm planning a build with a Ryzen 5 7600X3D, an RX 9060 XT OC, and 16GB of memory. Because RAM is extremely expensive where I live—around $240 for a 16GB module—I can only afford one stick right now. I intend to add a second matching module later, but I'd like to know whether running a single 16GB stick in the meantime will significantly hurt gaming performance or cause other issues.
4 Answers
Two sticks enable dual-channel memory and are faster, but a single 16GB module is a reasonable temporary solution if the alternative is spending another $240. Keep your system free of unnecessary background software so Windows and other programs don’t consume too much of the available memory.
It should be perfectly usable for now. The 7600X3D’s large 3D cache reduces how much gaming performance depends on memory speed and bandwidth, so the impact of running one stick is less severe than it would be on some other CPUs.
Expect the performance difference to vary by game, with roughly 5–15% lower FPS being possible in some cases. It usually won’t make the system unusable, and the X3D processor will help reduce the gap. DDR5-6000 with timings around CL30–36 is a good target, though DDR5-5600 is still acceptable and paying extra for 6400 probably isn’t worthwhile.
Using one 16GB stick now makes more sense than buying two 8GB sticks if you already know you’ll upgrade later. Try to choose a common module from a major memory manufacturer so finding a compatible second stick in a few years is more likely. A 24GB module could also be worth considering if it’s available at a reasonable price.
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