"Another HEDT chip is one of the biggest sellers of the week, with the 8-core AMD Ryzen 7 3700X"
Actually the 3700X is a mainstream/desktop SKU and AMD has mainstream/AM4 motherboard platform processors that go all the way up to the 16 core/32 thread 3950X. AMD's HEDT is branded as Threadripper/TRX40 motherboard platform on that current 3000 series line of Zen-2 based Desktop/HEDT(Threadripper Branded) line of processors that goes all the way up to the 64 core 3990X.
Now AMD's Ryzen APUs started of at the 2000 series and Zen-1 while the Zen+ Ryzen APUs are using the 3000 series branding and are not Zen-2 based. When the Ryzen 4000 series APUs arrive under 4000 series branding that will actually be Zen-2 based while the 4000 series Desktop/HEDT parts will be moving up to the Zen-3 CPU core micro-architecture and for Zen-3 the CCX unit will be supplanted by the CCD and the entire CCD's complement of L3 cache will be available to the CCD's full 8 Zen-3 cores.
The Tech Press needs to get together and create for their industry a proper technology nomenclature/glossary of AMD/Intel/Nvidia/other maker specific terminology and stop making so many egregious errors. Branding and code name terminology should also be included especially for the online press that lack the proper editor review prior to publishing.
Reporters used to carry reporting guide books(CPU/GPU industry focused) and that's very much needed for the technology reporting folks who appear to be more communication arts majors than Computing Sciences majors but AMD, Intel, Nvidia and others are lacking in the types of dictionaries/glossaries of terms that the old mainframe makers where famous for(IBM, Burroughs, Sperry/Univac etc).