Home > CPU Comparison > Core i9 10900KF or Ryzen 9 3900X: what's better?

Intel Core i9 10900KF vs AMD Ryzen 9 3900X

44 out of 100
Intel Core i9 10900KF
VS
48 out of 100
AMD Ryzen 9 3900X
Intel Core i9 10900KF
AMD Ryzen 9 3900X

We compared two desktop CPUs: the 3.7 GHz Intel Core i9 10900KF with 10-cores against the 3.8 GHz AMD 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.

  1. Review
  2. Differences
  3. Performance
  4. Specs
  5. Comments (1)

Review

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
The "iGPU" and "Power Efficiency" have a minor impact on the NanoReview Score for desktop CPU.
NanoReview Final Score
Choose your main usage scenario to recalculate the Final Score and see which CPU suits your needs.
๐Ÿ”Œ Usage Scenario:

Value for money (Beta)

Global average CPU prices are used by default! For better accuracy, enter your current prices and click โ€œCalculate".
Currency
VS
13.4
(Bad)
Value Index
23.6
(Mediocre)

Key Differences

What are the key differences between 3900X and 10900KF
Advantages of Intel Core i9 10900KF
  • 15% higher Turbo Boost frequency (5.3 GHz vs 4.6 GHz)
  • Newer - released 10 months later
Advantages of AMD Ryzen 9 3900X
  • Has 44 MB larger L3 cache size, helping fully utilize a high-end GPU in gaming
  • More modern manufacturing process โ€“ 7 versus 14 nanometers
  • Newer PCI Express version โ€“ 4.0
  • Has 2 more physical cores
  • Around 1.88 GB/s (4%) higher theoretical memory bandwidth

Test in Benchmarks

Comparing the performance of CPUs across various tasks
CPU:
Core i9 10900KF
vs
Ryzen 9 3900X

Cinebench

Reputable cross-platform benchmark for high-performance processors
Cinebench 2024 (Single)
Cinebench 2024 (Multi)
Cinebench Scores (#159th place)
Submit your benchmark results

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 714.6 MB/sec 872.1 MB/sec
Clang compilation 90.6 Klines/sec 104.4 Klines/sec
HTML 5 Browser 205.5 pages/sec 209.4 pages/sec
PDF Renderer 319.1 Mpixels/sec 299.9 Mpixels/sec
Text processing 182.6 pages/sec 144.4 pages/sec
Background blur 43 images/sec 41.1 images/sec
Photo processing 78.1 images/sec 75.2 images/sec
Ray tracing 20.1 Mpixels/sec 24.4 Mpixels/sec
Sources: GeekBench [1], [2] โ€“ 574 & 801 samples

PassMark

Synthetic test that focuses on raw computational performance for low-level functions
Passmark CPU (Single-Core)
Passmark CPU (Multi-Core)
Core i9 10900KF
22161
Ryzen 9 3900X +47%
32492
Integer math 85.6 GOps/sec 99.4 GOps/sec
Floating point math 53.3 GOps/sec 58.4 GOps/sec
Find prime numbers 62M Primes/sec 213M Primes/sec
Random string sorting 46.4M Strings/sec 48.2M Strings/sec
Data encryption 7.4 GBytes/sec 28.6 GBytes/sec
Data compression 374 MBytes/sec 448.8 MBytes/sec
Physics 1014 Frames/sec 1782 Frames/sec
Extended instructions 24.7B Matrices/sec 29.2B Matrices/sec
Sources: PassMark [3], [4] โ€“ 1682 & 17216 samples

Blender

3D rendering test that measures CPU performance in 3D modeling tasks (uses all cores)
Blender CPU
Core i9 10900KF
230.49
Ryzen 9 3900X +21%
278.98

Performance Per Watt

Shows the score you get per each watt of PL1 TDP
Cinebench 2024 / Watt 4.8 PPW 9.4 PPW
Geekbench 6 Multi / Watt 78.6 PPW 99.7 PPW
Passmark CPU Mark / Watt 177.3 PPW 309.4 PPW
Blender / Watt 1.84 PPW 2.66 PPW
These are rough calculations, as most CPUs surpass PL1 TDP wattage even in multicore workloads.

Recent User Tests

The latest benchmark tests that have been submitted by users
Intel Core i9 10900KF
DateBenchmarkResult
๐Ÿ“˜ 2025-08-09 (Mr. L)Cinebench 202478 / 594
Add View all (1)
AMD Ryzen 9 3900X
DateBenchmarkResult
๐Ÿ“˜ 2026-03-08 (Heliosgt)Cinebench 202476 / 1081
๐Ÿ“˜ 2026-02-11 (Ethan)Cinebench 202469 / 778
๐Ÿ“˜ 2026-01-30 (Amara)Cinebench 202475 / 986
๐Ÿ“˜ 2025-11-16 (LegendryDrifter)Geekbench 6 CPU1821 / 11106
๐Ÿ“˜ 2025-11-16 (LegendryDrifter)Cinebench 202479 / 1054
Add View all (9)

Specifications

Full technical specification of Intel Core i9 10900KF and AMD Ryzen 9 3900X

General

Vendor Intel Amd
Released May 1, 2020 July 7, 2019
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename Comet Lake -
Model number i9-10900KF -
Integrated GPU No No
Rival Equivalent - AMD Ryzen 9 3900X - Intel Core i9 9900K
Successor - Intel Core i9 14900KF - AMD Ryzen 9 9900X
Intel CPU rating (#197th place)
AMD Ryzen CPU ranking (#126th place)

CPU

Performance Cores
P-Cores 10 12
P-Threads 20 24
Base Frequency (P) 3.7 GHz 3.8 GHz
Turbo Boost Frequency (P) 5.3 GHz 4.6 GHz
Total
Total Cores 10 12
Total Threads 20 24
Bus Frequency 100 MHz 100 MHz
Multiplier 37x 38x
Bus Bandwidth 8 GT/s -
L1 Cache 64K (per core) 64K (per core)
L2 Cache 256K (per core) 512K (per core)
L3 Cache 20MB (shared) 64MB (shared)
Unlocked Multiplier Yes Yes

Package

Transistors - 3.8 billions
Fabrication Process 14 nm 7 nm
TDP (PL1) 125 W 105 W
Socket LGA-1200 AM4
Peak Temperature 100ยฐC 95ยฐC
Desktop CPU ranking (135th and 121st place)

Memory Support

Memory Types - DDR4-2933 - DDR4-3200
Max. Memory Size 128 GB 128 GB
Memory Channels 2 2
Max. Memory Bandwidth 45.8 GB/s 47.68 GB/s
ECC Support No Yes

Misc

Official Site Intel Core i9 10900KF official page AMD Ryzen 9 3900X official page
PCI Express Version 3.0 4.0
PCI Express Lanes 16 16

Cast your vote

Choose between two processors
27 (30%)
63 (70%)
Total votes: 90

Competitors

1. AMD Ryzen 9 3900X vs AMD Ryzen 7 5700X
2. AMD Ryzen 9 3900X vs AMD Ryzen 7 5800X3D
3. AMD Ryzen 9 3900X vs AMD Ryzen 7 7800X3D
Compare other CPUs (460+)

Comments

So which CPU will you choose: AMD Ryzen 9 3900X or Intel Core i9 10900KF?
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Avatar
Warzone lover November 14, 2021 at 07:23 PM
Of course the ryzen 9 3900x !! It is far more powerful
0 Reply
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