Yes, two different sized RAM modules can work together in dual channel configuration.
Yes, two different sized RAM modules can work together in dual channel configuration.
I've never come across this problem before. When I faced similar size issues, it functioned exactly as expected. You can locate the solution for your specific situation in the motherboard's documentation. In the RAM setup area, it explains how various RAM modules interact and specifies the correct placement.
Looks like your setup is still working fine with the current updates. Once you reach the 8GB limit, performance will drop to single-channel mode after that. Normal daily use shouldn't cause issues, but tasks like gaming or heavy editing will slow down to single-stick speed—something you already have.
I understand the situation. The manual specifies matching DDR4 DIMM pairs for dual-channel performance. It seems I might have to discard the 16 GB stick since returning it isn’t an option anymore.