AMD Ryzen Threadripper 9960X vs AMD Ryzen Threadripper PRO 3975WX

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Ryzen Threadripper 9960X compared with Ryzen Threadripper PRO 3975WX

	AMDRyzen Threadripper 9960X	AMDRyzen Threadripper PRO 3975WX
Overview
Released
Released	July 2025	September 2020
Cores and clocks
Cores
Cores	24	32 (better)
Threads
Threads	48	64 (better)
Base clock
Base clock	4.2 GHz	3.5 GHz
Boost clock
Boost clock	5.4 GHz (better)	4.2 GHz
L3 cache
L3 cache	128 MB	128 MB
Cores
Cores	Shimada Peak; Zen 5 architecture. Boxed product ID 100-100001595WOF; tray 100-000001595. AMD's 25 July 2025 launch blog confirms shipping from 31 July, following the earlier Computex announcement.	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 Release is kept at OEM month precision; an exact first-sale day for this model is unpublished.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.
Clocks
Clocks	Precision Boost 2; Precision Boost Overdrive and Curve Optimizer voltage offsets supported	Precision Boost 2; maximum boost up to 4.2 GHz. Locked for overclocking.
Cache
Cache	L1 1920 KB; L2 24 MB; the advertised 152 MB combined cache includes L2 and L3	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	sTR5	sWRX8
Base power
Base power	350 W	280 W
Unlocked
Unlocked	Yes	No
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	DDR5 RDIMM; four channels; up to 6400 MT/s. ECC enabled by default; AMD EXPO supported. AMD's TRX50 platform table specifies up to 1 TB memory.	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.
PCIe
PCIe	PCIe 5.0; 92 native/platform lanes, 88 usable. AMD's launch platform table distinguishes up to 80 PCIe 5.0 lanes. Four native USB 3.2 Gen 2 ports and two SATA ports; NVMe boot and RAID 0, 1, 10 and 5 supported.	PCIe 4.0; AMD’s exact-model launch table lists 128 lanes
Chipsets
Chipsets	TRX50	–
Process
Process	CPU cores: TSMC 4 nm FinFET; I/O die: TSMC 6 nm FinFET. Five package dies.	CPU cores: TSMC 7 nm FinFET
Cooler
Cooler	Cooler not included; maximum operating temperature 95°C	AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 90°C.