Just check this page: https://www.amazon.com/AMD-9800X3D-16-Thread-Desktop-Processor/dp/B0DKFMSMYK?------123456890?7649-20

I've been looking into this too, but I'm curious about a few details first: 1. What kind of power supply and cooling are you planning to use? I'm always a bit cautious about stability, and making sure you have enough overhead is pretty important for a reliable long-term setup.
2. Are you planning on a completely new build or just swapping the chip? Basically, you can't go wrong with staying in the AMD ecosystem if you want a solid gaming machine. Tbh, just get any compatible high-end motherboard from a reputable brand and you'll be fine. My main concern would just be making sure the listing is 'Shipped and Sold by Amazon' to avoid any reliability issues with third-party sellers. What are you waiting for, anyway?

Price could be lower than $450.