AMD Ryzen 9 5950X vs Ryzen 9 3900X

We compared two desktop CPUs: the 3.4 GHz AMD Ryzen 9 5950X with 16-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.


General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
Measure performance when all cores are involved
Power Efficiency
The efficiency score of electricity consumption
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 3900X and 5950X
Advantages of AMD Ryzen 9 5950X
  • Newer - released 1-year and 4-months later
  • 38% faster in a single-core Geekbench v5 test - 1825 vs 1327 points
  • Has 4 more physical cores
  • 7% higher Turbo Boost frequency (4.9 GHz vs 4.6 GHz)


Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
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Full technical specification of AMD Ryzen 9 5950X and Ryzen 9 3900X


Vendor AMD AMD
Released October 8, 2020 July 7, 2019
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Zen 3 (Vermeer) -
Integrated GPU No No


Performance Cores
P-Cores 16 12
P-Threads 32 24
Base Frequency (P) 3.4 GHz 3.8 GHz
Turbo Boost Frequency (P) 4.9 GHz 4.6 GHz
Total Cores 16 12
Total Threads 32 24
Bus Frequency 100 MHz 100 MHz
Multiplier 34x 38x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 512K (per core)
L3 Cache 64MB (shared) 64MB (shared)
Unlocked Multiplier Yes Yes


Transistors 4.15 billions 3.8 billions
Fabrication process 7 nm 7 nm
Socket AM4 AM4
TDP 105 W 105 W
Peak temperature 95°C 95°C

Memory Support

Memory types DDR4-3200 DDR4-3200
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 5950X official page AMD Ryzen 9 3900X official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 16

Cast your vote

Choose between two processors
88 (79.3%)
23 (20.7%)
Total votes: 111


So which CPU will you choose: AMD Ryzen 9 3900X or Ryzen 9 5950X?
Ruben 31 October 2021 11:17
Hoping for the 5950X to come down in price over the next 24 months on the used market. If I can get it for below 300€ (currently ~500€) it'll replace my 3900X when that becomes "too slow" in a year or two for my video editing workflow.
+11 Reply