Home > CPU Comparison > Ryzen Threadripper 3990X or Ryzen 9 3900X: what's better?

AMD Ryzen Threadripper 3990X vs Ryzen 9 3900X

66 out of 100
AMD Ryzen Threadripper 3990X
VS
48 out of 100
AMD Ryzen 9 3900X
AMD Ryzen Threadripper 3990X
AMD Ryzen 9 3900X

We compared two desktop CPUs: the 2.9 GHz AMD Ryzen Threadripper 3990X with 64-cores against the 3.8 GHz Ryzen 9 3900X with 12-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Multi-Core Performance
Measure performance when all cores are involved
Power Efficiency
The efficiency score of power consumption
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score for desktop CPU.
NanoReview Final Score
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Value for money (Beta)

Global average CPU prices are used by default! For better accuracy, enter your current prices and click “Calculate".
Currency
VS
3.4
(Bad)
Value Index
23.6
(Mediocre)

Key Differences

What are the key differences between 3900X and 3990X
Advantages of AMD Ryzen Threadripper 3990X
  • Has 52 more physical cores
  • Has 192 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Around 54.72 GB/s (115%) higher theoretical memory bandwidth
  • Supports up to 256 GB DDR4-3200 RAM
  • Supports quad-channel memory
  • Newer - released 7 months later
Advantages of AMD Ryzen 9 3900X
  • 7% higher Turbo Boost frequency (4.6 GHz vs 4.3 GHz)

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen Threadripper 3990X
vs
Ryzen 9 3900X

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (#159th place)
Submit your benchmark results

GeekBench v6

The new version of this benchmark emulates common operations often used in real-world apps
Geekbench 6 (Single-Core)
Geekbench 6 (Multi-Core)
File compression 1150 MB/sec 872.1 MB/sec
Clang compilation 265.5 Klines/sec 104.4 Klines/sec
HTML 5 Browser 369.7 pages/sec 209.4 pages/sec
PDF Renderer 372 Mpixels/sec 299.9 Mpixels/sec
Text processing 135.5 pages/sec 144.4 pages/sec
Background blur 41.2 images/sec 41.1 images/sec
Photo processing 109.7 images/sec 75.2 images/sec
Ray tracing 87.7 Mpixels/sec 24.4 Mpixels/sec
Sources: GeekBench [1], [2] – 197 & 801 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 493.6 GOps/sec 99.4 GOps/sec
Floating point math 283 GOps/sec 58.4 GOps/sec
Find prime numbers 421M Primes/sec 213M Primes/sec
Random string sorting 186.5M Strings/sec 48.2M Strings/sec
Data encryption 130.2 GBytes/sec 28.6 GBytes/sec
Data compression 1934.6 MBytes/sec 448.8 MBytes/sec
Physics 2946 Frames/sec 1782 Frames/sec
Extended instructions 116.4B Matrices/sec 29.2B Matrices/sec
Sources: PassMark [3], [4] – 313 & 17216 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 15 PPW 9.4 PPW
Geekbench 6 Multi / Watt 58.8 PPW 99.7 PPW
Passmark CPU Mark / Watt 284.4 PPW 309.4 PPW
Blender / Watt 3.87 PPW 2.66 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
AMD Ryzen Threadripper 3990X
No benchmark results yet
Add
AMD Ryzen 9 3900X
DateBenchmarkResult
📘 2026-03-08 (Heliosgt)Cinebench 202476 / 1081
📘 2026-02-11 (Ethan)Cinebench 202469 / 778
📘 2026-01-30 (Amara)Cinebench 202475 / 986
📘 2025-11-16 (LegendryDrifter)Geekbench 6 CPU1821 / 11106
📘 2025-11-16 (LegendryDrifter)Cinebench 202479 / 1054
Add View all (9)

Specifications

Full technical specification of AMD Ryzen Threadripper 3990X and Ryzen 9 3900X

General

Vendor Amd Amd
Released January 10, 2020 July 7, 2019
Type Desktop Desktop
Instruction Set x86-64 x86-64
Integrated GPU No No
Rival Equivalent - - Intel Core i9 9900K
Successor - - AMD Ryzen 9 9900X
AMD Ryzen CPU ranking (44th and 126th place)

CPU

Performance Cores
P-Cores 64 12
P-Threads 128 24
Base Frequency (P) 2.9 GHz 3.8 GHz
Turbo Boost Frequency (P) 4.3 GHz 4.6 GHz
Total
Total Cores 64 12
Total Threads 128 24
Bus Frequency 100 MHz 100 MHz
Multiplier 29x 38x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 512K (per core)
L3 Cache 256MB (shared) 64MB (shared)
Unlocked Multiplier Yes Yes

Package

Transistors 30.4 billions 3.8 billions
Fabrication Process 7 nm 7 nm
TDP (PL1) 280 W 105 W
Socket sTRX4 AM4
Peak Temperature 95°C 95°C
Desktop CPU ranking (63rd and 121st place)

Memory Support

Memory Types - DDR4-3200 - DDR4-3200
Max. Memory Size 256 GB 128 GB
Memory Channels 4 2
Max. Memory Bandwidth 102.4 GB/s 47.68 GB/s
ECC Support Yes Yes

Misc

Official Site AMD Ryzen Threadripper 3990X official page AMD Ryzen 9 3900X official page
PCI Express Version 4.0 4.0
PCI Express Lanes 64 16

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Comments

So which CPU will you choose: AMD Ryzen 9 3900X or Threadripper 3990X?
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