AMD Ryzen Threadripper PRO 3975WX vs AMD Ryzen Threadripper PRO 7975WX

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Ryzen Threadripper PRO 3975WX compared with Ryzen Threadripper PRO 7975WX

	AMDRyzen Threadripper PRO 3975WX	AMDRyzen Threadripper PRO 7975WX
Overview
Released
Released	September 2020	November 2023
Cores and clocks
Cores
Cores	32	32
Threads
Threads	64	64
Base clock
Base clock	3.5 GHz	4 GHz
Boost clock
Boost clock	4.2 GHz	5.3 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 Release is kept at OEM month precision; an exact first-sale day for this model is unpublished.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.	Storm Peak; Zen 4 architecture. Boxed product ID 100-100000453WOF; tray 100-000000453. AMD's support launch date of 19 October 2023 is its announcement. HP's 27 November 2023 QuickSpecs lists this CPU as a factory-configured Z6 G5 A option, supporting November availability; AMD's 21 November retail wording does not name the selected PRO models.
Clocks
Clocks	Precision Boost 2; maximum boost up to 4.2 GHz. Locked for overclocking.	Precision Boost 2; Precision Boost Overdrive and Curve Optimizer voltage offsets supported
Cache
Cache	L1 2048 KB; L2 16 MB; L3 128 MB	L1 2048 KB; L2 32 MB; the advertised 160 MB combined cache includes L2 and L3
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	sTR5
Base power
Base power	280 W	350 W
Unlocked
Unlocked	No	Yes
Cooler in the box
Cooler in the box	–	No
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.	DDR5 RDIMM; eight channels; up to 5200 MT/s. ECC enabled by default; AMD EXPO supported. WRX90 supports up to 2 TB; TRX50 reduces this to four channels and up to 1 TB.
PCIe
PCIe	PCIe 4.0; AMD’s exact-model launch table lists 128 lanes	PCIe 5.0; 148 native/platform lanes, 144 usable, including 128 PCIe 5.0 lanes with WRX90. TRX50 limits expansion to 92 total/88 usable lanes, including 48 PCIe 5.0. Four native USB 3.2 Gen 2 ports and four SATA ports; NVMe boot and RAID 0, 1, 10 and 5 supported.
Chipsets
Chipsets	–	WRX90, TRX50 and AMD PRO 695; AMD PRO technologies, DASH management and AMD Memory Guard supported. Platform capabilities depend on the motherboard.
Process
Process	CPU cores: TSMC 7 nm FinFET	CPU cores: TSMC 5 nm FinFET; I/O die: TSMC 6 nm FinFET. Five package dies; CCD 71 mm², I/O die 388 mm².
Cooler
Cooler	AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 90°C.	Cooler not included; maximum operating temperature 95°C