Home > CPU Comparison > Ryzen 9 3900X or Ryzen 7 5700X: what's better?

AMD Ryzen 9 3900X vs Ryzen 7 5700X

48 out of 100
AMD Ryzen 9 3900X
VS
52 out of 100
AMD Ryzen 7 5700X
AMD Ryzen 9 3900X
AMD Ryzen 7 5700X

We compared two desktop CPUs: the 3.8 GHz AMD Ryzen 9 3900X with 12-cores against the 3.4 GHz Ryzen 7 5700X with 8-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
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
πŸ”Œ Usage Scenario:

Value for money (Beta)

Global average CPU prices are used by default! For better accuracy, enter your current prices and click β€œCalculate".
Currency
VS
23.6
(Mediocre)
Value Index
57.1
(Average)

Key Differences

What are the key differences between 5700X and 3900X
Advantages of AMD Ryzen 9 3900X
  • Has 32 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • Has 4 more physical cores
Advantages of AMD Ryzen 7 5700X
  • Newer - released 2 years and 9 months later
  • 27% faster in a single-core Geekbench v6 test - 2166 vs 1699 points
  • Around 3.52 GB/s (7%) higher theoretical memory bandwidth

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Ryzen 9 3900X
vs
Ryzen 7 5700X

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench 2026 (Single) - 477
Cinebench 2026 (Multi) - 3191
Cinebench Scores (159th and 200th 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)
Ryzen 9 3900X
1699
Ryzen 7 5700X +27%
2166
Geekbench 6 (Multi-Core)
Ryzen 9 3900X +2%
10470
Ryzen 7 5700X
10313
File compression 872.1 MB/sec 1060 MB/sec
Clang compilation 104.4 Klines/sec 78.8 Klines/sec
HTML 5 Browser 209.4 pages/sec 209.4 pages/sec
PDF Renderer 299.9 Mpixels/sec 307.8 Mpixels/sec
Text processing 144.4 pages/sec 217.9 pages/sec
Background blur 41.1 images/sec 41.4 images/sec
Photo processing 75.2 images/sec 76.8 images/sec
Ray tracing 24.4 Mpixels/sec 18.6 Mpixels/sec
Sources: GeekBench [1], [2] – 801 & 637 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Ryzen 9 3900X
2703
Ryzen 7 5700X +25%
3386
Passmark CPU (Multi-Core)
Ryzen 9 3900X +22%
32492
Ryzen 7 5700X
26561
Integer math 99.4 GOps/sec 92.3 GOps/sec
Floating point math 58.4 GOps/sec 51.9 GOps/sec
Find prime numbers 213M Primes/sec 117M Primes/sec
Random string sorting 48.2M Strings/sec 33.6M Strings/sec
Data encryption 28.6 GBytes/sec 20.2 GBytes/sec
Data compression 448.8 MBytes/sec 323.8 MBytes/sec
Physics 1782 Frames/sec 1325 Frames/sec
Extended instructions 29.2B Matrices/sec 21.8B Matrices/sec
Sources: PassMark [3], [4] – 17216 & 21736 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Ryzen 9 3900X +36%
278.98
Ryzen 7 5700X
205.55

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 9.4 PPW 12.8 PPW
Geekbench 6 Multi / Watt 99.7 PPW 158.7 PPW
Passmark CPU Mark / Watt 309.4 PPW 408.6 PPW
Blender / Watt 2.66 PPW 3.16 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 9 3900X
DateBenchmarkResult
πŸ“˜ 2026-03-08 (Heliosgt)Cinebench 202476 / 1081
πŸ“˜ 2026-02-11 (Ethan)Cinebench 202469 / 778
πŸ“˜ 2026-01-30 (Amara)Cinebench 202475 / 986
πŸ“˜ 2025-11-16 (LegendryDrifter)Geekbench 6 CPU1821 / 11106
πŸ“˜ 2025-11-16 (LegendryDrifter)Cinebench 202479 / 1054
Add View all (9)
AMD Ryzen 7 5700X
DateBenchmarkResult
πŸ“˜ 2026-09-18 (Batti)Cinebench 20261525 / 14346
πŸ“˜ 2026-08-20 -> bangGeekbench 6 CPU2275 / 10804
πŸ“˜ 2026-07-12 (kcb2)Cinebench 2026477 / 3191
πŸ“˜ 2026-06-10 (DrDimebadger)Cinebench 202692 / 771
πŸ“˜ 2026-03-09 (Max_Max_In)Geekbench 6 CPU2308 / 11861
Add View all (25)

Specifications

Full technical specification of AMD Ryzen 9 3900X and Ryzen 7 5700X

General

Vendor Amd Amd
Released July 7, 2019 March 15, 2022
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename - Zen 3 (Vermeer)
Integrated GPU No No
Rival Equivalent - Intel Core i9 9900K - Intel Core i7 12700K
Successor - AMD Ryzen 9 9900X - AMD Ryzen 7 9700X
AMD Ryzen CPU ranking (126th and 104th place)

CPU

Performance Cores
P-Cores 12 8
P-Threads 24 16
Base Frequency (P) 3.8 GHz 3.4 GHz
Turbo Boost Frequency (P) 4.6 GHz 4.6 GHz
Total
Total Cores 12 8
Total Threads 24 16
Bus Frequency 100 MHz 100 MHz
Multiplier 38x 34x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 512K (per core)
L3 Cache 64MB (shared) 32MB (shared)
Unlocked Multiplier Yes Yes

Package

Transistors 3.8 billions -
Fabrication Process 7 nm 7 nm
TDP (PL1) 105 W 65 W
Max. Boost TDP (PL2) - 88 W
Socket AM4 AM4
Peak Temperature 95Β°C 90Β°C
Desktop CPU ranking (121st and 102nd place)

Memory Support

Memory Types - DDR4-3200 - DDR4-3200
Max. Memory Size 128 GB 128 GB
Memory Channels 2 2
Max. Memory Bandwidth 47.68 GB/s 51.2 GB/s
ECC Support Yes Yes

Misc

Official Site AMD Ryzen 9 3900X official page AMD Ryzen 7 5700X official page
PCI Express Version 4.0 4.0
PCI Express Lanes 16 24

Cast your vote

Choose between two processors
86 (40.2%)
128 (59.8%)
Total votes: 214

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5. AMD Ryzen 7 5700X vs Intel Core i5 12400F
6. AMD Ryzen 7 5700X vs AMD Ryzen 5 5600X (5)
7. AMD Ryzen 7 5700X vs AMD Ryzen 7 5700G (4)
8. AMD Ryzen 7 5700X vs AMD Ryzen 5 9600X
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Comments

So which CPU will you choose: AMD Ryzen 7 5700X or Ryzen 9 3900X?
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