I'm building a PC with a Ryzen 7 9700X and a B850 motherboard, but I can only afford one memory stick at first. Are there any realistic risks to buying one 16GB Patriot DDR5-6000 CL30 stick now and purchasing a second matching stick about a month later? I'd like both sticks to run together at their advertised speed and timings.
4 Answers
A one-month gap is usually not a big deal. The main difference is that separate sticks may come from different production batches and use slightly different memory chips, even when the model number is identical. Most systems will still work normally, but a kit is the safest choice if you can wait.
It will probably work, especially if you buy the exact same manufacturer, model, capacity, speed, and timings. However, a matched two-stick kit is tested together, so buying individual sticks carries a small risk that they won’t run at the advertised EXPO speed without tuning. Also, one stick by itself runs in single-channel mode; two sticks are what enable dual-channel operation.
If you need the PC now, buying one stick and adding the same SKU later is reasonable. Test the first stick for stability, then test both together when you buy the second. If EXPO at 6000 MT/s is unstable, lowering the memory speed slightly or relaxing the timings may solve it.
The safest option is to save up and buy both sticks as a matched kit. Still, the idea that two separately purchased identical sticks are guaranteed to fail together is exaggerated. The risk is real but fairly small, and it becomes more relevant the longer you wait between purchases or if the memory revision changes.
Related Questions
Lenovo Thinkpad Stuck In Update Loop Install FilterDriverU2_Reload