Intel Core i9-11900K vs AMD Ryzen 9 5900X

Comparative analysis of Intel Core i9-11900K and AMD Ryzen 9 5900X processors for all known characteristics in the following categories: Essentials, Performance, Memory, Graphics, Graphics interfaces, Graphics image quality, Graphics API support, Compatibility, Peripherals, Security & Reliability, Advanced Technologies, Virtualization. Benchmark processor performance analysis: PassMark - Single thread mark, PassMark - CPU mark, 3DMark Fire Strike - Physics Score.



Reasons to consider the Intel Core i9-11900K

  • CPU is newer: launch date 4 month(s) later
  • Around 10% higher clock speed: 5.30 GHz vs 4.8 GHz
  • Around 5% higher maximum core temperature: 100°C vs 95 °C
Launch date 16 Mar 2021 vs 5 Nov 2020
Maximum frequency 5.30 GHz vs 4.8 GHz
Maximum core temperature 100°C vs 95 °C

Reasons to consider the AMD Ryzen 9 5900X

  • Processor is unlocked, an unlocked multiplier allows for easier overclocking
  • 4 more cores, run more applications at once: 12 vs 8
  • 8 more threads: 24 vs 16
  • A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm vs 14 nm
  • Around 50% more L1 cache; more data can be stored in the L1 cache for quick access later
  • 3x more L2 cache, more data can be stored in the L2 cache for quick access later
  • 4x more L3 cache, more data can be stored in the L3 cache for quick access later
  • Around 19% lower typical power consumption: 105 Watt vs 125 Watt
  • Around 54% better performance in PassMark - CPU mark: 39520 vs 25661
  • Around 5% better performance in 3DMark Fire Strike - Physics Score: 13401 vs 12762
Specifications (specs)
Unlocked Unlocked vs Locked
Number of cores 12 vs 8
Number of threads 24 vs 16
Manufacturing process technology 7 nm vs 14 nm
L1 cache 768 KB vs 512 KB
L2 cache 6 MB vs 2 MB
L3 cache 64 MB vs 16 MB
Thermal Design Power (TDP) 105 Watt vs 125 Watt
PassMark - Single thread mark 3495 vs 3490
PassMark - CPU mark 39520 vs 25661
3DMark Fire Strike - Physics Score 13401 vs 12762

Compare benchmarks

CPU 1: Intel Core i9-11900K
CPU 2: AMD Ryzen 9 5900X

PassMark - Single thread mark
PassMark - CPU mark
3DMark Fire Strike - Physics Score
Name Intel Core i9-11900K AMD Ryzen 9 5900X
PassMark - Single thread mark 3490 3495
PassMark - CPU mark 25661 39520
3DMark Fire Strike - Physics Score 12762 13401

Compare specifications (specs)

Intel Core i9-11900K AMD Ryzen 9 5900X


Architecture codename Rocket Lake Zen 3
Launch date 16 Mar 2021 5 Nov 2020
Launch price (MSRP) $539 - $549 $549
Place in performance rating 13 8
Processor Number i9-11900K
Series 11th Generation Intel Core i9 Processors
Status Launched
Vertical segment Desktop Desktop
OPN PIB 100-100000061WOF
OPN Tray 100-000000061


64 bit support
Base frequency 3.50 GHz 3.7 GHz
Bus Speed 8 GT/s
L1 cache 512 KB 768 KB
L2 cache 2 MB 6 MB
L3 cache 16 MB 64 MB
Manufacturing process technology 14 nm 7 nm
Maximum core temperature 100°C 95 °C
Maximum frequency 5.30 GHz 4.8 GHz
Number of cores 8 12
Number of threads 16 24


Max memory channels 2 2
Maximum memory bandwidth 50 GB/s 47.68 GB/s
Maximum memory size 128 GB 128 GB
Supported memory types DDR4-3200 DDR4-3200
ECC memory support


Device ID 0x4C8A
Execution Units 32
Graphics base frequency 350 MHz
Graphics max dynamic frequency 1.30 GHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory 64 GB
Processor graphics Intel UHD Graphics 750

Graphics interfaces

Number of displays supported 3

Graphics image quality

4K resolution support
Max resolution over DisplayPort 5120 x 3200 @60Hz
Max resolution over eDP 5120 x 3200 @60Hz

Graphics API support

DirectX 12.1
OpenGL 4.5


Configurable TDP-down 95 Watt
Configurable TDP-down Frequency 3.00 GHz
Max number of CPUs in a configuration 1
Package Size 37.5 mm x 37.5 mm
Sockets supported FCLGA1200 AM4
Thermal Design Power (TDP) 125 Watt 105 Watt
Thermal Solution PCG 2019A


Max number of PCIe lanes 20 20
PCI Express revision 4.0 4.0
PCIe configurations Up to 1x16+1x4, 2x8+1x4, 1x8+3x4 1x16+x4, 2x8+x4, 1x8+2x4+x4
Scalability 1S Only

Security & Reliability

Execute Disable Bit (EDB)
Intel® Identity Protection technology
Intel® OS Guard
Intel® Secure Key technology
Intel® Software Guard Extensions (Intel® SGX)
Intel® Trusted Execution technology (TXT)
Secure Boot

Advanced Technologies

Enhanced Intel SpeedStep® technology
Idle States
Instruction set extensions Intel SSE4.1, Intel SSE4.2, Intel AVX2, Intel AVX-512
Intel 64
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Stable Image Platform Program (SIPP)
Intel® Thermal Velocity Boost
Intel® Turbo Boost technology
Thermal Monitoring
AMD StoreMI technology
Fused Multiply-Add 3 (FMA3)
Intel® Advanced Vector Extensions (AVX)
Intel® Advanced Vector Extensions 2 (AVX2)


Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)
AMD Virtualization (AMD-V™)