Does the bandwidth of the 2nd ram stick matter?

[Beshoy_3]

Hi, I have Acer E5-575G currently with an 8 GB DDR4 Ram. I don't know it's specific bandwidth (or whatever the number that comes after DDR4 means). Would buying an additional 8 GB DDR4 with a random number work? Or would that mess up the system. Thanks!

 

[brispuss]

All else being equal, the system will run the memory at the lowest common frequency / common bandwidth.

DDR4-xxxx, where the xxxx is a number which indicates the maximum operating frequency of the memory.

For example, if you use two different memory modules, one rated at DDR4-2133 and the other module rated at DDR4-2400, the system will run both modules at the lower of the two frequencies; in this case at 2133 MT/s (MHz).

So mixing different frequency memory modules is not really recommended, as system will run at lower memory frequency (of the two memory modules).

 

[Beshoy_3]

All else being equal, the system will run the memory at the lowest common frequency / common bandwidth.

DDR4-xxxx, where the xxxx is a number which indicates the maximum operating frequency of the memory.

For example, if you use two different memory modules, one rated at DDR4-2133 and the other module rated at DDR4-2400, the system will run both modules at the lower of the two frequencies; in this case at 2133 MT/s (MHz).

So mixing different frequency memory modules is not really recommended, as system will run at lower memory frequency (of the two memory modules).