AMD Ryzen 9 3950X vs Ryzen 7 5800X3D

We compared two desktop CPUs: the 3.5 GHz AMD Ryzen 9 3950X with 16-cores against the 3.4 GHz Ryzen 7 5800X3D with 8-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.


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
NanoReview Final Score
Generic CPU rating
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score when comparing desktop CPUs.

Key Differences

What are the key differences between 5800X3D and 3950X
Advantages of AMD Ryzen 9 3950X
  • Has 8 more physical cores
  • Unlocked multiplier
  • 4% higher Turbo Boost frequency (4.7 GHz vs 4.5 GHz)
Advantages of AMD Ryzen 7 5800X3D
  • Newer - released 2-years and 4-months later
  • Has 32768 KB larger L3 cache size
  • 21% faster in a single-core Geekbench v6 test - 2132 vs 1768 points

Test in Benchmarks

Comparing the performance of CPUs across various tasks

Cinebench R23

Reputable cross-platform benchmark for high-performance processors
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)

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 997.1 MB/sec 1170 MB/sec
Clang compilation 125.5 Klines/sec 83.4 Klines/sec
HTML 5 Browser 231.5 pages/sec 230.4 pages/sec
PDF Renderer 317.4 Mpixels/sec 319 Mpixels/sec
Text processing 143.7 pages/sec 208.1 pages/sec
Background blur 39.3 images/sec 55.4 images/sec
Photo processing 84.3 images/sec 77.6 images/sec
Ray tracing 31.8 Mpixels/sec 20.6 Mpixels/sec
Sources: GeekBench [1], [2]


Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Integer math 133.8 GOps/sec 89.5 GOps/sec
Floating point math 78.1 GOps/sec 49.9 GOps/sec
Find prime numbers 186M Primes/sec 205M Primes/sec
Random string sorting 64.2M Strings/sec 34.4M Strings/sec
Data encryption 38.1 GBytes/sec 20.2 GBytes/sec
Data compression 588.4 MBytes/sec 328.3 MBytes/sec
Physics 1655 Frames/sec 2880 Frames/sec
Extended instructions 36.7B Matrices/sec 22.2B Matrices/sec
Sources: PassMark [3], [4]

Value for money

Enter the current prices of the CPUs and click "Calculate" to determine which one has a better value-to-performance ratio.


Full technical specification of AMD Ryzen 9 3950X and Ryzen 7 5800X3D


Vendor AMD AMD
Released November 25, 2019 March 15, 2022
Type Desktop Desktop
instruction set x86-64 x86-64
Codename - Zen 3 (Vermeer)
Integrated GPU No No


Performance Cores
P-Cores 16 8
P-Threads 32 16
Base Frequency (P) 3.5 GHz 3.4 GHz
Turbo Boost Frequency (P) 4.7 GHz 4.5 GHz
Total Cores 16 8
Total Threads 32 16
Bus Frequency 100 MHz 100 MHz
Multiplier 35x 34x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 512K (per core)
L3 Cache 64MB (shared) 96MB (shared)
Unlocked Multiplier Yes No


Transistors 3.8 billions -
Fabrication process 7 nm 7 nm
TDP (PL1) 105 W 105 W
Socket AM4 AM4
Peak temperature - 90°C

Memory Support

Memory types - DDR4-3200 - DDR4-3200
- DDR4-2933
- DDR4-2667
Memory Size 128 GB 128 GB
Max. Memory Channels 2 2
Max. Memory Bandwidth 47.68 GB/s 47.68 GB/s
ECC Support Yes Yes


Official site AMD Ryzen 9 3950X official page AMD Ryzen 7 5800X3D official page
PCI Express Version 4.0 4.0
PCI Express Lanes 16 20

Cast your vote

Choose between two processors
14 (51.9%)
13 (48.1%)
Total votes: 27


So which CPU will you choose: AMD Ryzen 7 5800X3D or Ryzen 9 3950X?