Amazon.com: CPU Ryzen 9 3900X R9 3900X 3.8 GHz Twelve-Core 24-Thread CPU Processor 7NM L3=64M 100-000000023 Socket AM4 Run Quickly to Help You Run Your Computer. : Electronics
Just bought a brand new 3900x for less than the price of a 3800x. : r/Amd
Amazon.com: AMD Ryzen 9 3900X 12-core, 24-thread unlocked desktop processor with Wraith Prism LED Cooler (Renewed) : Everything Else
Amazon.com: ASUS ROG X570 Crosshair VIII Hero (Wi-Fi) ATX Motherboard and AMD Ryzen 9 3900X 12-core, 24-Thread : Electronics