AMD Ryzen 9 3900X vs AMD Ryzen Threadripper PRO 3945WX

Every spec side by side, from each maker's published figures.

Only show differences

Better figure, where one is clearly better

Share comparison

Ryzen 9 3900X compared with Ryzen Threadripper PRO 3945WX

	AMDRyzen 9 3900X	AMDRyzen Threadripper PRO 3945WX
Overview
Released
Released	July 2019	September 2020
Cores and clocks
Cores
Cores	12	12
Threads
Threads	24	24
Base clock
Base clock	3.8 GHz	4 GHz
Boost clock
Boost clock	4.6 GHz (better)	4.3 GHz
L3 cache
L3 cache	64 MB	64 MB
Cores
Cores	Zen 2; Matisse; twelve cores with simultaneous multithreading. Two CPU chiplets with six active cores each and a separate I/O die (PCGamesN).	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 Release is kept at OEM month precision; an exact first-sale day for this model is unpublished.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	Unlocked for overclocking; Precision Boost Overdrive with Automatic Overclocking supported, as described in AMD's launch notice.	Precision Boost 2; maximum boost up to 4.3 GHz. Locked for overclocking.
Cache
Cache	768 KB L1; 6 MB L2; 64 MB L3.	L1 768 KB; L2 6 MB; L3 64 MB
Graphics and AI
Built-in graphics
Built-in graphics	No	No
Graphics
Graphics	No integrated graphics; a separate graphics card is required.	A separate graphics card is required
Platform
Socket
Socket	AM4	sWRX8
Base power
Base power	105 W	280 W
Unlocked
Unlocked	Yes	No
Cooler in the box
Cooler in the box	Yes	–
Memory support
Memory support	DDR4; two channels; up to 3200 MT/s.	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 4.0 x16; AMD introduced PCIe 4.0 support with the X570 platform at launch.	PCIe 4.0; AMD’s exact-model launch table lists 128 lanes
Chipsets
Chipsets	X570 at launch; check the motherboard's CPU support list and BIOS for other AM4 boards.	–
Process
Process	TSMC 7nm FinFET CPU cores; 14nm I/O die (PCGamesN).	CPU cores: TSMC 7 nm FinFET
Cooler
Cooler	Retail boxed processor includes an RGB cooler (PCGamesN; inclusion also confirmed by TechRadar); AMD's current support specification does not name a cooler. Maximum operating temperature 95°C.	AMD’s current specification does not state whether a cooler is included. Maximum operating temperature 90°C.