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Intel Core i7 6950X vs AMD Ryzen 9 3950X

We compared two desktop CPUs: the 3.0 GHz Intel Core i7 6950X with 10-cores against the 3.5 GHz AMD Ryzen 9 3950X with 16-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 3950X and 6950X
Advantages of Intel Core i7 6950X
  • Supports quad-channel memory
Advantages of AMD Ryzen 9 3950X
  • Newer - released 3-years and 7-months later
  • Has 39 MB larger L3 cache size
  • More modern manufacturing process – 7 versus 14 nanometers
  • Unlocked multiplier
  • Has 6 more physical cores
  • 36% faster in a single-core Geekbench v5 test - 1296 vs 952 points
  • Consumes up to 25% less energy than the Core i7 6950X – 105 vs 140 Watt
  • 34% higher Turbo Boost frequency (4.7 GHz vs 3.5 GHz)
  • Newer PCI Express version – 4.0


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 Intel Core i7 6950X and AMD Ryzen 9 3950X


Vendor Intel AMD
Released May 30, 2016 November 25, 2019
Launch price 1723 USD 749 USD
Type Desktop Desktop
Codename Broadwell E Zen 2
Model number i7-6950X -
Socket LGA-2011-3 AM4
Integrated GPU No No


Cores 10 16
Threads 20 32
Base Frequency 3.0 GHz 3.5 GHz
Turbo Boost Frequency 3.5 GHz 4.7 GHz
Bus frequency 100 MHz 100 MHz
Multiplier 30x 36x
L1 Cache 32K (per core) 64K (per core)
L2 Cache 256K (per core) 512K (per core)
L3 Cache 25MB (shared) 64MB (shared)
Unlocked Multiplier No Yes


Transistors - 19.2 billions
Fabrication process 14 nm 7 nm
TDP 140 W 105 W

Memory support

Memory types DDR4-2133 DDR4-3200
Memory Size 128 GB 128 GB
Max. Memory Channels 4 2
Max. Memory Bandwidth - 47.68 GB/s
ECC Support No Yes


Official site Intel Core i7 6950X official page AMD Ryzen 9 3950X official page
PCI Express Version 3.0 4.0
PCI Express Lanes 40 20

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So which CPU will you choose: AMD Ryzen 9 3950X or Intel Core i7 6950X?