AMD Ryzen Threadripper PRO 3975WX vs AMD Ryzen Threadripper PRO 5975WX

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Ryzen Threadripper PRO 3975WX compared with Ryzen Threadripper PRO 5975WX

	AMDRyzen Threadripper PRO 3975WX	AMDRyzen Threadripper PRO 5975WX
Overview
Released
Released	September 2020	March 2022
Cores and clocks
Cores
Cores	32	32
Threads
Threads	64	64
Base clock
Base clock	3.5 GHz	3.6 GHz
Boost clock
Boost clock	4.2 GHz	4.5 GHz (better)
L3 cache
L3 cache	128 MB	128 MB
Cores
Cores	Castle Peak; Zen 2. Boxed product ID 100-100000086WOF; tray ID 100-000000086. Announced 14 July 2020. Lenovo stated September 2020 availability for the first ThinkStation P620 systems, and confirmed them shipping on 14 October. Release is kept at OEM month precision; an exact first-sale day for this model is unpublished. AMD later announced March 2021 standalone retail availability for this model.	Chagall PRO; Zen 3. Boxed product ID 100-100000445WOF; tray ID 100-000000445. AMD confirmed all five 5000 WX models available in Lenovo ThinkStation P620 systems on 8 March 2022; this is the OEM release, before later standalone retail availability.
Clocks
Clocks	Precision Boost 2; maximum boost up to 4.2 GHz. Locked for overclocking.	Precision Boost 2; maximum boost up to 4.5 GHz. Unlocked for overclocking; OEM system restrictions can differ.
Cache
Cache	L1 2048 KB; L2 16 MB; L3 128 MB	L1 2048 KB; L2 16 MB; L3 128 MB
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	A separate graphics card is required	A separate graphics card is required
Platform
Socket
Socket	sWRX8	sWRX8
Base power
Base power	280 W	280 W
Unlocked
Unlocked	No	Yes
Memory support
Memory support	DDR4; eight channels; up to 3200 MT/s. AMD’s exact-model launch table supports up to 2 TB ECC UDIMM, RDIMM or LRDIMM memory; motherboard and system limits can be lower.	DDR4; eight channels; up to 3200 MT/s. AMD’s launch specification supports up to 2 TB ECC UDIMM, RDIMM or LRDIMM memory; motherboard and system limits can be lower.
PCIe
PCIe	PCIe 4.0; AMD’s exact-model launch table lists 128 lanes	PCIe 4.0; AMD’s exact-model launch table lists 128 lanes
Process
Process	CPU cores: TSMC 7 nm FinFET	CPU cores: TSMC 7 nm FinFET
Cooler
Cooler	AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 90°C.	AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 95°C.