Amazon.com: AMD Ryzen 7 3700X 8-Core, 16-Thread Unlocked Desktop Processor with Wraith Prism LED Cooler : Electronics
Best Memory (RAM) for 3rd Gen AMD Ryzen CPUs 3900X, 3700X, 3600
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
AMD Ryzen 7 3700X and Ryzen 9 3900X Review: Disruptive Force - PC Perspective
Ryzen 3000 Memory Benchmark & Best RAM for Ryzen (fClock, uClock, & mClock) | GamersNexus - Gaming PC Builds & Hardware Benchmarks