Some memory speed benchmarks with a Ryzen 1700 @ 4.0GHz and a 1080 Ti, 2666 Auto vs 3200C14 vs 3466C14 tweaking sub-timings. Timings and settings used in the comments. : r/Amd
Gaming on the Ryzen R7 1700 - RAM/Memory Speed Matters! | OzTalksHW - YouTube
Dell OptiPlex 5055 SFF Ryzen 7 1700 Pro CPU 8GB RAM PC NO Graphic NO HD READ | eBay