2666 MHz Intel Core i3/i5,2933 MHz Intel Core i7/i9, Dual channel mode would be required  not single channel The issue with the Mhz myth is that the CAS latency goes UP with the Mhz making some ram that is jedec 2133 2400 2666 CAS 16 faster than 3200 CAS 20 An unlocked K series cpu would also be needed.
In a OptiPlex 7090 SFF with a gen11 CPU, RAM module can run at speed as high as 3200M, with 1.2v, as per the specs. I'm curious what the CAS latency would be in this case, and what the SPD data is. Does anyone have such a system and have a CPU-Z screenshot to share? Thank you.
What's the RAM speed, CAS latency and voltage of OptiPlex 7090 SFF with gen 11 
CPU?