AMD Ryzen 9 9900X vs AMD Ryzen Threadripper PRO 3945WX

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Ryzen 9 9900X compared with Ryzen Threadripper PRO 3945WX

	AMDRyzen 9 9900X	AMDRyzen Threadripper PRO 3945WX
Overview
Released
Released	August 2024	September 2020
Cores and clocks
Cores
Cores	12	12
Threads
Threads	24	24
Base clock
Base clock	4.4 GHz	4 GHz
Boost clock
Boost clock	5.6 GHz (better)	4.3 GHz
L3 cache
L3 cache	64 MB	64 MB
Cores
Cores	12 Zen 5 cores with simultaneous multithreading; codename Granite Ridge AM5; 3 dies in the package	Castle Peak; Zen 2. Tray ID 100-000000168. 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 Release is kept at OEM month precision; an exact first-sale day for this model is unpublished. The socket is sWRX8 according to LDLC’s exact tray listing; AMD’s current support page omits it.
Clocks
Clocks	Precision Boost 2; Precision Boost Overdrive and Curve Optimizer supported	Precision Boost 2; maximum boost up to 4.3 GHz. Locked for overclocking.
Cache
Cache	L1 960 KB, L2 12 MB, L3 64 MB	L1 768 KB; L2 6 MB; L3 64 MB
Graphics and AI
Built-in graphics
Built-in graphics	Yes	No
Graphics
Graphics	AMD Radeon Graphics, 2 graphics cores at 2200 MHz; USB-C DisplayPort Alt Mode	A separate graphics card is required
Platform
Socket
Socket	AM5	sWRX8
Base power
Base power	120 W	280 W
Unlocked
Unlocked	Yes	No
Cooler in the box
Cooler in the box	No	–
Memory support
Memory support	DDR5, 2 channels, up to 256 GB (UDIMM); DDR5-5600 with 2 modules, DDR5-3600 with 4; ECC with motherboard 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.
PCIe
PCIe	PCIe 5.0; 28 lanes (24 usable); native USB: 4 × USB 3.2 Gen 2 (10Gbps), 1 × USB 2.0	PCIe 4.0; AMD’s exact-model launch table lists 128 lanes
Chipsets
Chipsets	A620, X670E, X670, B650E, B650, X870E, X870, B840, B850	–
Process
Process	TSMC 4nm FinFET (CPU cores), TSMC 6nm FinFET (I/O die)	CPU cores: TSMC 7 nm FinFET
Cooler
Cooler	Not included; Liquid cooler recommended for optimal performance; Tjmax 95°C	AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 90°C.