Intel Core i9 11900K vs AMD Ryzen 9 3900X

Budget Pick Limited
Intel Core i9 11900K Buy Now ↗
VS
Discontinued
AMD Ryzen 9 3900X Buy Now ↗
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Review

Intel Core i9 11900K
AMD Ryzen 9 3900X
Single-Core Performance
67
48
Multi-Core Performance
38
44
Power Efficiency
41
52
Integrated Graphics
24
0
QucikComparison Final Score
54
48
❖

Key differences

Key distinctions and advantages between Intel Core i9 11900K and AMD Ryzen 9 3900X

Reasons to consider the Intel Core i9 11900K

  • + 8 cores / 16 threads with SMT
  • + DDR4 memory support
  • + LGA-1200 socket
  • + Rocket Lake architecture

Reasons to consider the AMD Ryzen 9 3900X

  • + 12 cores / 24 threads with SMT
  • + DDR4 memory support
  • + AM4 socket

Pros & Cons

Intel Core i9 11900K
  • Solid single-core performance
  • Built-in integrated graphics
  • High power draw (125W TDP)
  • Limited multi-threaded performance
  • Older generation architecture

"A mid-range Intel Core i9 11900K processor with strong single-core performance (67/100). Suited for everyday productivity."

AMD Ryzen 9 3900X
  • Reliable everyday performance
  • Moderate power consumption (105W TDP)
  • Limited single-core performance
  • Limited multi-threaded performance
  • No integrated graphics — discrete GPU required
  • Older generation architecture

"A entry-level AMD Ryzen 9 3900X processor with balanced performance (single-core 48/100, multi-core 44/100). Suited for basic computing tasks."

Value for Money Beta

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PKRs
PKRs
Intel Core i9 11900K
VS
AMD Ryzen 9 3900X
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VALUE INDEX
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Benchmarks

Blender
Blender CPU
Intel Core i9 11900K
213.02
AMD Ryzen 9 3900X +31%
278.98
Cinebench
Cinebench 2024 (Single)
Intel Core i9 11900K +28%
95
AMD Ryzen 9 3900X
74
Intel Core i9 11900K AMD Ryzen 9 3900X
Cinebench 2024 (Multi) 819 982

Specifications

GeekBench v6
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Geekbench 6 (Single-Core) 2494 1699
Geekbench 6 (Multi-Core) 11196 10470
File compression 862.2 MB/sec 872.1 MB/sec
Clang compilation 89.5 Klines/sec 104.4 Klines/sec
HTML 5 Browser 228.1 pages/sec 209.4 pages/sec
PDF Renderer 331.5 Mpixels/sec 299.9 Mpixels/sec
Text processing 241.7 pages/sec 144.4 pages/sec
Background blur 54.3 images/sec 41.1 images/sec
Photo processing 89.4 images/sec 75.2 images/sec
Ray tracing 20.7 Mpixels/sec 24.4 Mpixels/sec
PassMark
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Passmark CPU (Single-Core) 3504 2703
Passmark CPU (Multi-Core) 24946 32512
Integer math 89 GOps/sec 99.5 GOps/sec
Floating point math 52.7 GOps/sec 58.4 GOps/sec
Find prime numbers 67M Primes/sec 213M Primes/sec
Random string sorting 37.9M Strings/sec 48.2M Strings/sec
Data encryption 15.9 GBytes/sec 28.6 GBytes/sec
Data compression 329.2 MBytes/sec 448.8 MBytes/sec
Physics 1049 Frames/sec 1788 Frames/sec
Extended instructions 23.3B Matrices/sec 29.2B Matrices/sec
Performance Per Watt
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Cinebench 2024 / Watt 6.6 PPW 9.4 PPW
Geekbench 6 Multi / Watt 89.6 PPW 99.7 PPW
Passmark CPU Mark / Watt 199.6 PPW 309.6 PPW
Blender / Watt 1.7 PPW 2.66 PPW
General
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Vendor Intel Amd
Released 16-Mar-21 7-Jul-19
Type Desktop Desktop
Instruction Set x86-64 x86-64
Codename Rocket Lake
Model number i9-11900K
Integrated GPU UHD Graphics 750 No
Qualcomm Equivalent
CPU
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
P-Cores 8 12
P-Threads 16 24
Base Frequency (P) 3.5 GHz 3.8 GHz
E-Cores
E-Threads
Base Frequency (E)
Total Cores 8 12
Total Threads 16 24
Multiplier 35x 38x
L1 Cache 64K (per core) 64K (per core)
L2 Cache 512K (per core) 512K (per core)
Unlocked Multiplier Yes Yes
Package
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Transistors 3.8 billions
Fabrication Process 14 nm 7 nm
TDP (PL1) 125 W 105 W
Socket LGA-1200 AM4
Peak Temperature 100°C 95°C
iGPU
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Integrated Graphics Intel UHD Graphics 750
GPU Boost Clock 1300 MHz
Shading Units 256
TMUs 64
ROPs 32
Execution Units 32
iGPU FLOPS 0.7 TFLOPS
Memory Support
Specification Intel Core i9 11900K ↗ AMD Ryzen 9 3900X ↗
Memory Types -3200 -3200
Max. Memory Size 128 GB 128 GB
Memory Channels 2 2
Max. Memory Bandwidth 50 GB/s 47.68 GB/s
ECC Support No Yes

Comparison with Competitors

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