AMD · Ryzen

Ryzen 9 3900XT

Released July 2020

A 12-core, 24-thread Zen 2 desktop processor for AM4, refreshing the previous X model with a 4.7 GHz boost clock.

Model history · 2 models, 2019–2020

2019Ryzen 9 3900X Compare
2020Ryzen 9 3900XT

Cores: 12/24
Boost: 4.7 GHz
L3: 64 MB
Power: 105 W
Socket: AM4

Unlocked

What reviewers say

Reviewers praised its strong content-creation performance, but found little improvement over the 3900X. The loss of the bundled cooler and higher launch street price made the refresh poor value. Both preferred the cheaper 3900X for most buyers.

From pcgamer.com and techspot.com

Specifications

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Cores and clocks

Cores: 12
Threads: 24
Base clock: 3.8 GHz
Boost clock: 4.7 GHz
L3 cache: 64 MB
Cores: Zen 2; Matisse
Cache: L2 6 MB

Graphics and AI

Built-in graphics: No
Graphics: A separate graphics card is required

Platform

Socket: AM4
Base power: 105 W
Unlocked: Yes
Cooler in the box: No
Memory support: DDR4; up to 3200 MT/s
PCIe: PCIe 4.0
Process: TSMC 7nm FinFET
Cooler: No cooler included; AMD recommends a liquid cooler with at least a 280 mm radiator or equivalent air cooling; Tjmax 95°C

Pros and cons

Pros

PCIe 4.0 support
Unlocked for overclocking
Simultaneous multithreading

Cons

Requires a separate graphics card
No cooler included
No DDR5 support

Closest rivals

Model	Cores	Boost	L3	Power	Socket	Released
AMDRyzen 9 5900X	12/24	4.8 GHz	64 MB	105 W	AM4	Nov 2020
IntelCore i7-12700K	12/20	5 GHz	25 MB	125 W	LGA1700	Nov 2021
IntelCore i9-10900K	10/20	5.3 GHz	20 MB	125 W	LGA1200	May 2020

Previous model: Ryzen 9 3900X.

Sources

Photo: AMD render identified as the Ryzen 9 3900XT retail box in PC Gamer’s exact-model review; visible artwork lacks an exact model label. Original studio background retained.

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