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AMD Ryzen 9 3900X

AMD Ryzen 9 3900X

Released: July 7, 2019
Total Cores
12
Physical Cores
Total Threads
24
Concurrent Threads
Boost Clock
4.6 GHz
Max Turbo Frequency

Technical Highlights

Vendor : AMD
Socket : AM4
Manufacturing Process : 7 nm
TDP (PL1) : 105 W

About this CPU

desktop processor produced by AMD for socket AM4 that has 12 cores and 24 threads. The base clock frequency of the CPU is 3800 MHz, but due to Turbo Core technology, it can perform up to 4600 MHz. The size of the L3 cache is 64 MB. Please note that this chip doesn’t have integrated graphics.

Last updated: September 11, 2026
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AMD Ryzen 9 3900X

Overall Score Of AMD Ryzen 9 3900X

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

71
Overall
Single-Core Performance
65
Multi-Core Performance
65
CPU Architecture
59
Memory Architecture
53
Energy Efficiency
72

General Information of AMD Ryzen 9 3900X

CPU Name

AMD Ryzen 9 3900X

Vendor

AMD

Release Date

July 7, 2019

Generation

Ryzen 3000 Series

Type

Desktop

Instruction Set

x86-64

Foundry

TSMC

Package and Thermals of AMD Ryzen 9 3900X

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)

105 W

Socket

AM4

CPU Cores of AMD Ryzen 9 3900X

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

Excellent

3.8 GHz

81% of the current best P-Core Base Frequency score

P-Core Turbo Frequency

Good

4.6 GHz

74% 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

Multiplier

38x

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

L3 Cache

64 MB

33% of the current best L3 Cache score

NPU

No

Memory Support of AMD Ryzen 9 3900X

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

Compute: BMI1, BMI2, F16C, SHA; Performance: Precision Boost 2, SMT, XFR 2; Virtualization: AMD-V; Security: EVP, SMAP, SMEP

Benchmarks of AMD Ryzen 9 3900X

Geekbench V6

Benchmark results for this category.

Multi-Core:
10,470
25% of max score
Single-Core:
1,699
36% of max score
File Compression:
872
32% of max score
Clang Compression:
104
33% of max score
HTML5 Browser:
209
25% of max score
PDF Renderer:
300
39% of max score
Text Processing:
144
32% of max score
Background Blur:
41
35% of max score
Photo Processing:
75
31% of max score
Ray Tracing:
24
39% of max score

PassMark CPU

Benchmark results for this category.

Multi-Core:
32,492
45% of max score
Single-Core:
2,703
46% of max score
Integer Math:
99.40 MOps/Sec
1% of max score
Floating Point:
58.40 MOps/Sec
1% of max score
Prime Numbers:
213 Million Primes/Sec
20% of max score
String Sorting:
48.20 Thousand Strings/Sec
1% of max score
Data Encryption:
28.60 MBytes/Sec
1% of max score
Data Compression:
448.80 KBytes/Sec
1% of max score
Physics:
1,782 Frames/Sec
20% of max score
Extended Instructions:
29.20 Million Matrices/Sec
1% of max score

Cinebench 2024

Benchmark results for this category.

Multi-Core:
982
25% of max score
Single-Core:
74
33% of max score

Blender

Benchmark results for this category.

Render Score:
279 (86th)
38% of max score

Performance Charts Of AMD Ryzen 9 3900X

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

Performance Radar Chart

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

Performance Benchmarks

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

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Frequently Asked Questions about AMD Ryzen 9 3900X

The AMD Ryzen 9 3900X was officially released in July 7, 2019, targeting the Desktop market.

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

The AMD Ryzen 9 3900X operates at a base clock frequency of 3.8 GHz for its performance cores. This is the speed the processor runs at under normal, non-intensive workloads.

The AMD Ryzen 9 3900X can reach a maximum turbo boost frequency of 4.6 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 3900X 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.

The AMD Ryzen 9 3900X achieves a multi-core score of 982 on Cinebench 2024, reflecting its capability in multi-threaded creative and rendering applications.

The AMD Ryzen 9 3900X scores 1,699 on the Geekbench v6 single-core test, indicating how snappy and responsive it will feel in everyday applications and most games.

With an overall performance rating of 71%, the AMD Ryzen 9 3900X is considered a high-performance processor in our comprehensive CPU database.

The AMD Ryzen 9 3900X features 64 MB of L3 cache. A larger cache helps the processor access frequently used data faster, which can significantly boost gaming performance.

The AMD Ryzen 9 3900X has a base power consumption (TDP) of 105 W. This value is important for choosing an adequate CPU cooler and determining your overall system power requirements.

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

The AMD Ryzen 9 3900X 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.