3700x available with stock options 5800x offered in a cooler variant
3700x available with stock options 5800x offered in a cooler variant
You're starting out as a builder with a solid setup. Your components look great—ASUS B550-PLUS, 32 GB RAM, Samsung Evo 970, Masterbox MB511, and a 650W PSU. For CPU choices, the Ryzen 7 3700X is popular but some users mention thermal concerns. If you prefer using your existing cooler, the Ryzen 7 5800X might be a better fit since it's designed for better cooling performance. Your workflow with Sketchup, 3DS MAX, Revit, etc., suggests you value efficiency and precision, so picking a CPU that supports those tools without extra heat issues would be wise.
If you're often on the go or handling heavy tasks, you'll definitely need something cooler. I’d go for a 5800X or wait for the expected 5700X—they perform much better and justify the higher cost.