AMD Ryzen Threadripper PRO 7985WX vs AMD Ryzen Threadripper PRO 9955WX

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Ryzen Threadripper PRO 7985WX compared with Ryzen Threadripper PRO 9955WX

	AMDRyzen Threadripper PRO 7985WX	AMDRyzen Threadripper PRO 9955WX
Overview
Released
Released	November 2023	July 2025
Cores and clocks
Cores
Cores	64 (better)	16
Threads
Threads	128 (better)	32
Base clock
Base clock	3.2 GHz	4.5 GHz
Boost clock
Boost clock	5.1 GHz	5.4 GHz (better)
L3 cache
L3 cache	256 MB (better)	64 MB
Cores
Cores	Storm Peak; Zen 4 architecture. Boxed 100-100000454WOF; tray 100-000000454. AMD’s 19 October 2023 support launch date is the announcement. HP’s 27 November 2023 QuickSpecs lists this exact 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.	Shimada Peak; Zen 5 architecture. Boxed 100-100000725WOF; tray 100-000000725. 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 2; Precision Boost Overdrive and Curve Optimizer voltage offsets supported	Precision Boost 2; Precision Boost Overdrive and Curve Optimizer voltage offsets supported
Cache
Cache	L1 4096 KB; L2 64 MB	L1 1280 KB; L2 16 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	sTR5
Base power
Base power	350 W	350 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	No
Memory support
Memory support	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.	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 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, 5 and 10 supported.	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.	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	CPU cores: TSMC 5 nm FinFET; I/O die: TSMC 6 nm FinFET. 9 package dies; CCD 71 mm², I/O die 388 mm².	CPU cores: TSMC 4 nm FinFET; I/O die: TSMC 6 nm FinFET. 3 package dies.
Cooler
Cooler	Cooler not included; maximum operating temperature 95°C	Cooler not included; maximum operating temperature 95°C