Question gigabyte ga-a320m-s2h mix ram

[j121]

Im getting the gigabyte ga-a320m-s2h, i allready got 8 gb viper 2400 mhz p416g240c5k supported by the motherboard but i want match with Another 4
or 8 gb stick and the same ram is no longer sold here. Any suggestions what other ram would mix good with this from the support list?
https://download.gigabyte.com/FileList/Memory/mb_memory_ga-a320m-s2h.pdf

 

[Lutfij]

Pick the same stick of ram again or invest in a dual channel ram kit, that will help your system perform optimally.

Mind if I ask you what the specs to your system is/are? List them like so:
CPU:
Motherboard:
Ram:
SSD/HDD:
GPU:
PSU:
Chassis:

 

[j121]

i would pick the same ram but they dont sell it anymore . i mixed ram many times Before on ddr3 systems but i hear this board and ryzen is harder to mix the ram. i built many systems Before so im not new to this just wanted to check if anybody mixed ram with sucess on this board. thanks