AMD Ryzen Threadripper 1950X vs AMD Ryzen Threadripper PRO 9975WX

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Ryzen Threadripper 1950X compared with Ryzen Threadripper PRO 9975WX

	AMDRyzen Threadripper 1950X	AMDRyzen Threadripper PRO 9975WX
Overview
Released
Released	August 2017	July 2025
Cores and clocks
Cores
Cores	16	32 (better)
Threads
Threads	32	64 (better)
Base clock
Base clock	3.4 GHz	4 GHz
Boost clock
Boost clock	4 GHz	5.4 GHz (better)
L3 cache
L3 cache	32 MB	128 MB (better)
Cores
Cores	Zen architecture; boxed product ID YD195XA8AEWOF. AMD's support page lists 31 July 2017, when pre-orders began; its press release confirms on-shelf availability on 10 August 2017, used here.	Shimada Peak; Zen 5 architecture. Boxed 100-100000723WOF; tray 100-000000723. AMD’s 17 July 2025 blog names this model and says PRO 9000 systems are available starting 23 July; announcement and on-sale dates are distinct.
Clocks
Clocks	Precision Boost and XFR supported; AMD states up to 4.2 GHz with XFR under suitable cooling, separate from the published 4.0 GHz maximum boost	Precision Boost 2; Precision Boost Overdrive and Curve Optimizer voltage offsets supported
Cache
Cache	L1 1536 KB; L2 8 MB	L1 2560 KB; L2 32 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	sTR4	sTR5
Base power
Base power	180 W	350 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	No
Memory support
Memory support	DDR4; four channels; up to 2667 MT/s	DDR5 RDIMM; eight channels; up to 6400 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 3.0; 64 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 80 PCIe 5.0. Four native USB 3.2 Gen 2 ports and four SATA ports; NVMe boot and RAID 0, 1, 5 and 10 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; AMD’s platform guide says OEM systems do not support overclocking.
Process
Process	14 nm	CPU cores: TSMC 4 nm FinFET; I/O die: TSMC 6 nm FinFET. 5 package dies.
Cooler
Cooler	No cooler included; maximum operating temperature 68°C	Cooler not included; maximum operating temperature 95°C