AMD Ryzen 7 9800X3D vs AMD Ryzen 9 3900X

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Ryzen 7 9800X3D compared with Ryzen 9 3900X

	AMDRyzen 7 9800X3D	AMDRyzen 9 3900X
Overview
Released
Released	November 2024	July 2019
Cores and clocks
Cores
Cores	8	12 (better)
Threads
Threads	16	24 (better)
Base clock
Base clock	4.7 GHz	3.8 GHz
Boost clock
Boost clock	5.2 GHz (better)	4.6 GHz
L3 cache
L3 cache	96 MB (better)	64 MB
Cores
Cores	8 Zen 5 cores with simultaneous multithreading; codename Granite Ridge AM5; 2 dies in the package	Zen 2; Matisse; twelve cores with simultaneous multithreading. Two CPU chiplets with six active cores each and a separate I/O die (PCGamesN).
Clocks
Clocks	Precision Boost 2; Precision Boost Overdrive and Curve Optimizer supported	Unlocked for overclocking; Precision Boost Overdrive with Automatic Overclocking supported, as described in AMD's launch notice.
Cache
Cache	L1 640 KB, L2 8 MB, L3 96 MB	768 KB L1; 6 MB L2; 64 MB L3.
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	No integrated graphics; a separate graphics card is required.
Platform
Socket
Socket	AM5	AM4
Base power
Base power	120 W	105 W
Unlocked
Unlocked	Yes	Yes
Cooler in the box
Cooler in the box	No	Yes
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; two channels; up to 3200 MT/s.
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 x16; AMD introduced PCIe 4.0 support with the X570 platform at launch.
Chipsets
Chipsets	A620, X670E, X670, B650E, B650, X870E, X870, B840, B850	X570 at launch; check the motherboard's CPU support list and BIOS for other AM4 boards.
Process
Process	TSMC 4nm FinFET (CPU cores), TSMC 6nm FinFET (I/O die)	TSMC 7nm FinFET CPU cores; 14nm I/O die (PCGamesN).
Cooler
Cooler	Not included; Liquid cooler recommended for optimal performance; Tjmax 95°C	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.