I am using this RAM on an Asrock x370 Killer SLI/AC which is one of the early AM4 motherboards even though I have a 3000 series CPU installed. I can't get to 3600MHz, but I can get close, but I'm not deducting a star for that as it's probably caused by this old board. With an old 2000 series processor I couldn't get it to run above 2800MHz. I haven't tested the first generation processor, but I think the results will be similar to the second generation. Another thing to note is that this memory is a bit larger than most other kits so there may be some space issues with some heatsinks. With my old heatsink it barely fit and touched the heatsink so I replaced the heatsink with a water cooler.
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