AMD Ryzen 7 7700X, X670E motherboard and 32GB DDR5-6000 combo available for $500 - VideoCardz.com
Motherboard CPU Bundle - AMD Ryzen 5 5600X Desktop Processor 6-core 12-Thread Up to 4.6GHz Unlocked with Wraith Stealth Cooler Bundle with ASUS ROG Strix B550-A AMD AM4 Zen 3 Ryzen 5000
AMD AM5 CPU and ATX Motherboard Bundle
Supermicro AMD Motherboard/CPU Bundle - M12SWA-TF Workstation Motherboard Installed with AMD Ryzen Threadripper PRO 5995WX CPU 64-Core/128-Thread Processor - Integrated by Supermicro Server Motherboards - Newegg.com