3 Things to Match When Mixing RAM Sticks

Match the DDR generation You need the same generation, like DDR4 or DDR5. Mixing generations will not work.

Match the speed and CAS latency The speed (e.g., 3200MHz) and CAS latency (e.g., CL16) must be identical. If they differ, the motherboard will run both sticks at the slower stick’s settings.

Ignore the brand and model number You do not need the same brand or exact model. As long as the generation, speed, and timings match, they will usually work together in dual channel.