CPU AMD DESKTOP
AMD Ryzen 9 3900

AMD Ryzen 9 3900

Codename: Zen 2 (Matisse) Released: September 24, 2019
Total Cores
12
Physical Cores
Total Threads
24
Concurrent Threads
Boost Clock
4.3 GHz
Max Turbo Frequency

Technical Highlights

Vendor : AMD
Socket : AM4
Manufacturing Process : 7 nm
TDP (PL1) : 65 W

About this CPU

AMD Ryzen 9 3900 is a Zen 2 desktop processor for socket AM4 with 12 cores and 24 threads.

Last updated: September 11, 2026

Overall Score Of AMD Ryzen 9 3900

This summarizes how AMD Ryzen 9 3900 scores across single-core performance, multi-core performance, CPU architecture, memory architecture, and energy efficiency.

69
Overall
Single-Core Performance
62
Multi-Core Performance
63
CPU Architecture
57
Memory Architecture
53
Energy Efficiency
71

General Information of AMD Ryzen 9 3900

CPU Name

AMD Ryzen 9 3900

Vendor

AMD

Release Date

September 24, 2019

Generation

Ryzen 3000 Series

Type

Desktop

Instruction Set

x86-64

Codename

Zen 2 (Matisse)

Foundry

TSMC

Package and Thermals of AMD Ryzen 9 3900

Manufacturing Process

7 nm

29% of the current best Manufacturing Process score

Max Temp (TJMax)

Excellent

95°C

86% of the current best Max Temp (TJMax) score

Transistor Count

3.8 billion

TDP (PL1)

65 W

Socket

AM4

CPU Cores of AMD Ryzen 9 3900

Performance Cores

P-Cores

12

33% of the current best P-Cores score

P-Threads

Excellent

24

67% of the current best P-Threads score

P-Core Base Frequency

Good

3.1 GHz

66% of the current best P-Core Base Frequency score

P-Core Turbo Frequency

Good

4.3 GHz

69% of the current best P-Core Turbo Frequency score

Total

Total Cores

12

33% of the current best Total Cores score

Total Threads

Excellent

24

67% of the current best Total Threads score

Bus Frequency

Top tier

100 MHz

100% of the current best Bus Frequency score

Unlocked Multiplier

Yes

L1 Cache

64 KB per core

13% of the current best L1 Cache score

L2 Cache

0.5 MB per core

1% of the current best L2 Cache score

NPU

No

Memory Support of AMD Ryzen 9 3900

Memory Types

Good

DDR4-3200

60% of the current best Memory Types score

Max Memory Size

Good

128 GB

25% of the current best Max Memory Size score

Memory Channels

2

3% of the current best Memory Channels score

Max Memory Bandwidth

47.68 GB/s

4% of the current best Max Memory Bandwidth score

ECC Support

Yes

Technologies

BMI1, BMI2, F16C, SHA; Precision Boost 2, SMT, XFR 2; AMD-V; EVP, SMAP, SMEP

Benchmarks of AMD Ryzen 9 3900

PassMark CPU

Benchmark results for this category.

Multi-Core:
30,560
42% of max score
Single-Core:
2,603
44% of max score
Integer Math:
97.50 MOps/Sec
1% of max score
Floating Point:
56.70 MOps/Sec
1% of max score
Prime Numbers:
203 Million Primes/Sec
19% of max score
String Sorting:
44.80 Thousand Strings/Sec
1% of max score
Data Encryption:
26.60 MBytes/Sec
1% of max score
Data Compression:
413.90 KBytes/Sec
1% of max score
Physics:
1,620 Frames/Sec
18% of max score
Extended Instructions:
26 Million Matrices/Sec
1% of max score

Performance Charts Of AMD Ryzen 9 3900

These charts show how AMD Ryzen 9 3900 balances CPU benchmark performance and relative score versus current market leaders.

Performance Radar Chart

Category scores overview (0 to 100)
AMD Ryzen 9 3900

Performance Benchmarks

Grey is the market top value. Colored bar is AMD Ryzen 9 3900.
Market Top
AMD Ryzen 9 3900

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Frequently Asked Questions about AMD Ryzen 9 3900

The AMD Ryzen 9 3900 was officially released in September 24, 2019, targeting the Desktop market.

The AMD Ryzen 9 3900 is equipped with 12 cores and 24 threads, making it a powerhouse for heavily threaded professional workloads like video editing and 3D rendering.

The AMD Ryzen 9 3900 uses the AM4 socket. This is a critical specification for compatibility, as it dictates which motherboards can support this processor.

The AMD Ryzen 9 3900 operates at a base clock frequency of 3.1 GHz for its performance cores. This is the speed the processor runs at under normal, non-intensive workloads.

The AMD Ryzen 9 3900 can reach a maximum turbo boost frequency of 4.3 GHz on its performance cores. This allows the CPU to dynamically increase its speed to handle demanding tasks and gaming workloads.

The AMD Ryzen 9 3900 has a maximum junction temperature (TjMax) of 95°C. This is the maximum temperature possible before the processor initiates thermal throttling or shuts down to prevent permanent damage.

With an overall performance rating of 69%, the AMD Ryzen 9 3900 is considered a solid mid-range processor in our comprehensive CPU database.

The AMD Ryzen 9 3900 has a base power consumption (TDP) of 65 W. This value is important for choosing an adequate CPU cooler and determining your overall system power requirements.

The AMD Ryzen 9 3900 supports DDR4-3200 memory, dictating the RAM speeds and capacities you can pair with this processor.

The AMD Ryzen 9 3900 does not have integrated graphics and requires a dedicated graphics card.

Disclaimer: Specs, pricing, and benchmarks are sourced from official manufacturer data and verified test results. While we strive for precision, product details and pricing may change. Comparigon may earn an affiliate commission on qualifying purchases.