Right. Now I don't want to use white compounds that like basically glue the heatsink to the cpu like the older systems. If anyone remembers trying to take out a heatsink and the cpu comes out with it. I've had that happen once or twice. But really, you get AS 5 or similar, unless you are really doing a lot of high overclocking with a high end setup, most pastes will work fine. Lately I've been using a grey/silver Cooler Master compound that came with my heatsink that I installed on my ryzen 1600 and it works just fine. I ran out of Arctic Silver, had that stuff on hand, so you know how it goes.