Accordingly, will 3000MHz ram work on 2666mhz motherboard?
No. The RAM will run at the JEDEC standard and work just fine.
One may also ask, can my motherboard support my RAM? Since each type of memory has different notch locations (which are important for installation), different memory technologies aren't compatible with each other. Motherboards are generally only able to support one type of memory technology.
Consequently, what happens if you put 2400mhz RAM on a motherboard that only uses 2133mhz?
The RAM will downclock to the slower speed. The speed rating of RAM is its maximum speed. It can run slower.
Is 2400mhz good for RAM?
To start, RAM speed is a bit of a misnomer, so let's first clarify some terms. For example, 8GB DDR4-2400 RAM is running at a frequency of 2400MHz. Frequencies of RAM typically range from 800MHz in older DDR2 modules up to 4200MHz in DDR4. Current gen DDR4 modules start at 2133MHz.