Yes, you can combine single-rank and dual-rank RAM in a system.
Yes, you can combine single-rank and dual-rank RAM in a system.
Just install it and let the system handle things. I can't guarantee 100% accuracy, but it should work fine. For performance, dual-rank modules tend to be more efficient, so the single-rank version might lag slightly unless they match in speed and timing. Also, adding more RAM and using a dual-channel setup will make a noticeable difference. By the way, my old gaming laptop came with one 2400GB single-rank stick, and I upgraded it to a 2133GB dual-rank one. It performed much better afterward.
It should work properly, though the memory usage will match the speed of the slowest card.