AMD Ryzen 9 5950X vs Ryzen 9 3950X

We compared two 16-core desktop CPUs: the 3.4 GHz AMD Ryzen 9 5950X against the 3.5 GHz Ryzen 9 3950X. 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 electricity consumption
NanoReview Final Score
Generic CPU rating

Key Differences

What are the key differences between 3950X and 5950X
Advantages of AMD Ryzen 9 5950X
  • 42% faster in a single-core Geekbench v5 test - 1825 vs 1282 points
  • Newer - released 11-months later
  • 4% higher Turbo Boost frequency (4.9 GHz vs 4.7 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)


Full technical specification of AMD Ryzen 9 5950X and Ryzen 9 3950X


Vendor AMD AMD
Released October 8, 2020 November 25, 2019
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Zen 3 (Vermeer) -
Integrated GPU No No


Performance Cores
P-Cores 16 16
P-Threads 32 32
Base Frequency (P) 3.4 GHz 3.5 GHz
Turbo Boost Frequency (P) 4.9 GHz 4.7 GHz
Total Cores 16 16
Total Threads 32 32
Bus Frequency 100 MHz 100 MHz
Multiplier 34x 35x
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 -

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 3950X official page
PCI Express Version 4.0 4.0
PCI Express Lanes 20 16

Cast your vote

Choose between two processors
448 (66.6%)
225 (33.4%)
Total votes: 673


So which CPU will you choose: AMD Ryzen 9 3950X or Ryzen 9 5950X?
Hithammer 17 November 2020 16:42
I have i7 7700k(3 1/2) planning upgrade to amd processor should I get 3900 or 3950 or 5900? Also I got b550 mag tomahawk motherboard. Is it compatibility those processor ? 😢😢
+33 Reply
CW74 28 November 2020 18:36
No. Your motherboard is designed for Intel processors. You'll need to buy one made for AMD processors.
+18 Reply
Ben 02 December 2020 02:47
b550 is compatible with both 3950x and 5950x.. no idea what they are saying
+9 Reply
Kins 01 February 2021 06:38
Ben, I mean technically it is but it'd be a waste of a CPU using a B550
+1 Reply
John smith 02 February 2021 02:20
If he has a 7700k then he don't have a b450 mb!
+2 Reply
Rajiv 23 October 2020 17:45
I plan on buying several computers with either 3950x or 5950x for CFD calculations. Given the $50 price difference I will definitely wait a bit and buy 5950x. All my current computers have Intel processors. I am now moving to AMD for performance.
+15 Reply
Root 23 October 2020 20:21
Good choice! 5950x is really powerful CPU.
+1 Reply
Zippy 01 January 2021 18:18
I'm considering something similar except I decided to go for the 3950x. It's only about 15% slower in all core clock speed. Plus I can get them used for about $650 now.
+4 Reply
Greg 15 October 2020 23:32
As much as I'd like to upgrade as my mobo supports it, it's probably not worth it for the incremental performance gain over my 11month old 3950. I still haven't pushed my current one to its limits yet & the diff in clock speed is within my OC window.
+28 Reply
Malmoth 31 October 2020 18:18
Definitely not worth the upgrade if you already own a 3950X. The 3950X is still a damn good CPU that'll keep you happy for years to come.
+51 Reply