Hello. I have RAM amd r7 2133 ddr4 8gb. I want to buy the same but at 4 gb. will they work together normally?
Typically, you should only use RAM in the configuration it was boxed in. That being said, it may work. If you make sure that there is both a 8gb and 4gb DIMM on each channel, then each channel will have 12 total, and that may work, but nothing is guaranteed.