RAM timings and frequency

 RAM timings and frequency

RANDOM ACCESS MEMORY

Aside from the memory size, pay attention to the timings (delays) and frequency of the RAM; the higher the frequency and the lower the timings, the more productive the RAM. 

If you already have some RAM and want to add one or more tiles to your computer, this is where the difficulty may begin.

You must select memory with the same frequency and timings; otherwise, the frequency alignment will be on the smaller side, the timings will be on the higher side, and the computer will not start (blue screen). 

You will need to remove one of the cards and set the appropriate BIOS settings. As a result, one of the boards will not be used.

Source: I.T Academy