You cannot add "AMD RYZEN 9 3900X 3.8GHz 12-Core 3.8 GHz (4.6 GHz Max Boost) Socket AM4 105W 100-100000023BOX Desktop P..." to the cart because the product is out of stock.
AMD Ryzen 7 3700X 3.6GHz 8-Core, 16-Thread Unlocked Desktop Processor with Wraith Prism LED Cooler