AMD Ryzen 9 3900X vs AMD Ryzen 9 3900XT

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

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Ryzen 9 3900X compared with Ryzen 9 3900XT

	AMDRyzen 9 3900X	AMDRyzen 9 3900XT
Overview
Released
Released	July 2019	July 2020
Cores and clocks
Cores
Cores	12	12
Threads
Threads	24	24
Base clock
Base clock	3.8 GHz	3.8 GHz
Boost clock
Boost clock	4.6 GHz	4.7 GHz (better)
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).	Zen 2; Matisse
Clocks
Clocks	Unlocked for overclocking; Precision Boost Overdrive with Automatic Overclocking supported, as described in AMD's launch notice.	–
Cache
Cache	768 KB L1; 6 MB L2; 64 MB L3.	L2 6 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	AM4
Base power
Base power	105 W	105 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	Yes	No
Memory support
Memory support	DDR4; two channels; up to 3200 MT/s.	DDR4; up to 3200 MT/s
PCIe
PCIe	PCIe 4.0 x16; AMD introduced PCIe 4.0 support with the X570 platform at launch.	PCIe 4.0
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).	TSMC 7nm 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.	No cooler included; AMD recommends a liquid cooler with at least a 280 mm radiator or equivalent air cooling; Tjmax 95°C