https://www.pcgamer.com/amd-explains-differences-between-its-new-ryzen-threadripper-2-processors/

AMD launched its second generation Threadripper lineup yesterday, and as was previously rumored, some of the SKUs contain the WX suffix and others are labeled with just the X. So, what's the difference?

From a marketing standpoint, the two WX series CPUs are for "creators and innovators" and the X series SKUs are for "enthusiasts and gamers." That's really all it boils down to—both are based on the same 12-nanometer Zen+ architecture, and both series work in the same motherboards.