That list with the PC builds of various ranges looks like a decent guide. Only things I would say is:
- Graphics card isn't too important, this is more of a Solidworks requirement then Solidcam. Whatever runs your Solidworks models at a good frame rate should work great in Solidcam as well. I've even used geforce cards without problem in Solidcam.
- Make sure to actually get the NVME SSD like it suggests, Solidworks in general performs much better on NVME vs a standard SSD
- 32GB should be plenty of RAM, I can't think of any reason anyone would use a very large assembly like a whole tractor with every nut and bolt modeled inside of a CAM program.
- I9-9900k is a very powerful CPU. Xeon's usually cost more, they tend to be used if you have to have a high core count or need to use ECC memory.