AMD Ryzen Threadripper 1900X vs AMD Ryzen Threadripper PRO 9965WX

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Ryzen Threadripper 1900X compared with Ryzen Threadripper PRO 9965WX

	AMDRyzen Threadripper 1900X	AMDRyzen Threadripper PRO 9965WX
Overview
Released
Released	August 2017	July 2025
Cores and clocks
Cores
Cores	8	24 (better)
Threads
Threads	16	48 (better)
Base clock
Base clock	3.8 GHz	4.2 GHz
Boost clock
Boost clock	4 GHz	5.4 GHz (better)
L3 cache
L3 cache	16 MB	128 MB (better)
Cores
Cores	Zen architecture; boxed product ID YD190XA8AEWOF. AMD confirms first availability on 31 August 2017.	Shimada Peak; Zen 5 architecture. Boxed 100-100000724WOF; tray 100-000000724. 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	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 768 KB; L2 4 MB	L1 1920 KB; L2 24 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