Ryzen 9 3900X

12 cores · 24 threads · up to 4.6 GHz on AM4.

4.6 · 544 votes

As an Amazon Associate we may earn from qualifying purchases.

Cores

Threads

Boost

4.6 GHz

L3 cache

64 MB

TDP

105W

Socket

AM4

Performance breakdown

Gaming20

Productivity19

Single-core19

Multi-core50

Power efficiency20

Lab scores

Performance score20

Cores12

Threads24

Boost clock (GHz)4.6 GHz

Estimated gaming FPS

Paired with a high-end GPU. CPU impact is largest at 1080p.

1080p44 fps

1440p35 fps

4K24 fps

Full specifications

Processor & cores

Architecture: Matisse (Zen 2)
Process node: 7 nm
Socket: AM4
Release year: 2019
Total cores: 12
Threads: 24

Clocks & cache

Base clock: 3.8 GHz
Boost clock: 4.6 GHz
L1 cache: 768 KB
L2 cache: 6 MB
L3 cache: 64 MB

Memory & platform

Memory support: DDR4
Max capacity: 128 GB
Channels: 2
Max bandwidth: 51.196 GB/s
Base power (TDP): 105W
Max temperature: 95°C
Launch price: $499

Technologies

Extensions: AES-NI, AVX, AMD-V, Precision Boost 2

Community Feedback

What Owners Say

Owners love the huge multi-core performance for heavy workloads without breaking the bank. The main gripe is the chip runs hot under load and needs a good cooler.

Pros

Gaming and streaming without breaking a sweat
Plenty of cores for heavy multitasking
Runs cool with a good cooler
Still fast enough for modern games

Cons

Gets hot under heavy load
No bundled CPU cooler included
Single-core speed lags newer chips

Verdict

Our verdict on the Ryzen 9 3900X

The Ryzen 9 3900X is a 12-core, 24-thread desktop processor that made high-core-count computing affordable for mainstream users.

Get it if you’re a content creator or heavy multitasker who needs serious core muscle without breaking the bank on a newer chip. Skip it if you’re gaming—a newer, cheaper Ryzen 5 will feel faster and run cooler in most titles.