Hey, I have an ASRock B450M Pro4 motherboard, and I have a set of 2x8GB G.Skill Ripjaws V DDR4-2400 CL15 currently installed(in A2 and B2 slots), and I also own a set of 2x4GB G.Skill Ripjaws V DDR4-2400 CL15. My question is can I install them as well? If so, can I install only one(I would have to remove the CPU cooler to install the 2nd one and I think I'd rather just go with 20GB than go through that hassle). Which slots should they go in, and would it negatively affect my computer's performance in any way(I saw a LTT video in which apparently his PC was slower with 4 sticks than two?)? I have a Ryzen 5 2600 CPU if that matters at all. I tried installing one of them in B1 but that didn't work, PC wouldn't boot. I am a total noob at this!