G.SKILL Ripjaws V Series 32GB (2 x 16GB) DDR4 3000 - F4-3000C15D-32GVR Asus X370 Prime motherboard Asus QVL list says it's good for 2666. DOCP 3000 profile worked. Timing is 15-15-15-35, exactly as rated. So I've got it up to 3000. That being said, if I notice anything odd, I may manually back it off to 2666. I've only had it up and running for a day! Definitely check the QVL though! Haven't had any problems, but seeing so many others who have had problems with RAM not on the lists, just seems to me that Ryzen is picky about its RAM. Best to give it what it wants. Edit: note that, AFAIK, when it says "3000" it really means 2933.