Common features of Ryzen 3000 HEDT/workstation CPUs:

Socket: sTRX4 (Threadripper), sWRX8 (Threadripper PRO).
Threadripper CPUs support DDR4-3200 in quad-channel mode while Threadripper PRO CPUs support DDR4-3200 in octa-channel mode.
L1 cache: 64 KB (32 KB data + 32 KB instruction) per core.
L2 cache: 512 KB per core.
Threadripper CPUs support 64 PCIe 4.0 lanes while Threadripper PRO CPUs support 128 PCIe 4.0 lanes. 8 of the lanes are reserved as link to the chipset.
No integrated graphics.
Fabrication process: TSMC 7FF.

Branding and Model		Cores (threads)	Clock rate (GHz)		L3 cache (total)	TDP	Chiplets	Core config^[i]	Release date	MSRP
Branding and Model		Cores (threads)	Base	Boost	L3 cache (total)	TDP	Chiplets	Core config^[i]	Release date	MSRP
Ryzen Threadripper PRO	3995WX	64 (128)	2.7	4.2	256 MB	280 W ^[ii]	8 × CCD 1 × I/OD	16 × 4	Jul 14, 2020
	3975WX	32 (64)	3.5	4.2	128 MB		4 × CCD 1 × I/OD	8 × 4
	3955WX	16 (32)	3.9	4.3	64 MB		2 × CCD 1 × I/OD	4 × 4
	3945WX	12 (24)	4.0		64 MB		2 × CCD 1 × I/OD	4 × 3
Ryzen Threadripper	3990X	64 (128)	2.9		256 MB		8 × CCD 1 × I/OD	16 × 4	Feb 7, 2020	US $3990
	3970X	32 (64)	3.7	4.5	128 MB		4 × CCD 1 × I/OD	8 × 4	Nov 25, 2019	US $1999
	3960X	24 (48)	3.8	4.5	128 MB		4 × CCD 1 × I/OD	8 × 3	Nov 25, 2019	US $1399

References