AMD Ryzen 9 3950X vs Ryzen 9 3900XT

We compared two desktop CPUs: the 3.5 GHz AMD Ryzen 9 3950X with 16-cores against the 3.8 GHz Ryzen 9 3900XT with 12-cores. On this page, you'll find out which processor has better performance in benchmarks, games and other useful information.

Review

General overview and comparison of the processors
Single-Core Performance
Performance in single-threaded apps and benchmarks
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 3900XT and 3950X
Advantages of AMD Ryzen 9 3950X
  • Has 4 more physical cores
Advantages of AMD Ryzen 9 3900XT
  • Newer - released 7-months later

Benchmarks

Comparing the performance of CPUs in benchmarks
Cinebench R23 (Single-Core)
Cinebench R23 (Multi-Core)
22731
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
38841
Geekbench 5 (Single-Core)
Geekbench 5 (Multi-Core)
14428
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Specifications

Full technical specification of AMD Ryzen 9 3950X and Ryzen 9 3900XT

General

Vendor AMD AMD
Released November 25, 2019 July 7, 2020
Type Desktop Desktop
instruction set x86-64 x86-64
Codename Zen 2 Zen 2
Socket AM4 AM4
Integrated GPU No No

Performance

Cores 16 12
Threads 32 24
Base Frequency 3.5 GHz 3.8 GHz
Turbo Boost Frequency 4.7 GHz 4.7 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 35x 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

Power

Transistors 3.8 billions 3.8 billions
Fabrication process 7 nm 7 nm
TDP 105 W 105 W
Max. 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

Misc

Official site AMD Ryzen 9 3950X official page AMD Ryzen 9 3900XT official page
PCI Express Version 4.0 4.0
PCI Express Lanes 16 24

Cast your vote

Choose between two processors
90 (54.2%)
76 (45.8%)
Total votes: 166

Comments

So which CPU will you choose: AMD Ryzen 9 3900XT or Ryzen 9 3950X?
Avatar
ProDigit 07 July 2020 17:38
For the price, a 3900XT is the best. It has higher single/dual/quad/Octa core performance, which is what you need for games. The older 3950x also limits ram usage to 3200Mhz, vs the 3900XT runs it past it peaking at 3600-3700Mhz; making the 3900XT within 5% the same speed as the 3950x.
+9 Reply
Avatar
Levan 26 July 2020 14:37
What memory limit are you talking about? I have Ryzen 9350x and G.Skill Trident Neo memory with 3600 MHz default frequency, which can be easily overclocked further if needed. No problem whatsoever. It is a known fact that 3600 MHz is considered a sweet spot for Ryzen 3950x, and many users run it with even higher frequencies. The RAM specs for both processors are identical.
+33 Reply
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