What benchmarks reveal high-core CPUs' performance and cost for Resolve/Blender?

[EvelynT]

I'm building a new workstation for 4K video editing and 3D rendering, and I'm trying to decide between the latest high-core-count CPUs from the two main manufacturers. The benchmark scores I'm seeing online are all over the place depending on the test, and I'm not sure which metrics are most relevant for my real-world workloads in DaVinci Resolve and Blender. For other content creators or engineers who have built similar systems, what specific benchmarks or real-world project tests did you find most telling for assessing sustained multi-threaded performance and thermal throttling? How significant is the platform cost difference when you factor in motherboard and cooling, and have you noticed any software optimization advantages for one architecture over the other in professional applications?