So I have this 8 GB stick that will get my pc to 12 GB, which is just temporary until I can get a new ram kit for 16 GB. My pc currently has 8 GB of ram running in dual channel @ 3200 MT/s. The spare 8 GB stick I have is single and running @ 2666 MT/s. If I combine these, they will run at 2666 MHZ, but it will be 12 GB instead of 8, which is a huge plus for me and will be run at 1 4GB stick and 1 8 GB stick. I have a Ryzen 3 5300g and I don't have spare ram slots, and I have heard that single channel ram hurts ryzen's performance alot, but I am running at dual channel, but also ryzen benefits from faster memory. So I don't know if its worth going to slower 2666 MT/s 12 GB ram for a while than 8 GB 3200 MT/s.