Intel Core i9-11900KB vs AMD Ryzen 9 3900XT

Comparative analysis of Intel Core i9-11900KB and AMD Ryzen 9 3900XT 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.

 

Differences

Reasons to consider the Intel Core i9-11900KB

  • Around 4% higher clock speed: 4.90 GHz vs 4.7 GHz
  • Around 67% more L2 cache; more data can be stored in the L2 cache for quick access later
  • Around 62% lower typical power consumption: 65 Watt vs 105 Watt
  • Around 20% better performance in PassMark - Single thread mark: 3308 vs 2746
Specifications (specs)
Maximum frequency 4.90 GHz vs 4.7 GHz
L2 cache 10 MB vs 6 MB
Thermal Design Power (TDP) 65 Watt vs 105 Watt
Benchmarks
PassMark - Single thread mark 3308 vs 2746

Reasons to consider the AMD Ryzen 9 3900XT

  • 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 10 nm SuperFin
  • 2.7x more L3 cache, more data can be stored in the L3 cache for quick access later
  • Around 43% better performance in PassMark - CPU mark: 32670 vs 22917
  • Around 11% better performance in 3DMark Fire Strike - Physics Score: 8546 vs 7681
Specifications (specs)
Unlocked Unlocked vs Locked
Number of cores 12 vs 8
Number of threads 24 vs 16
Manufacturing process technology 7 nm vs 10 nm SuperFin
L3 cache 64 MB vs 24 MB
Benchmarks
PassMark - CPU mark 32670 vs 22917
3DMark Fire Strike - Physics Score 8546 vs 7681

Compare benchmarks

CPU 1: Intel Core i9-11900KB
CPU 2: AMD Ryzen 9 3900XT

PassMark - Single thread mark
CPU 1
CPU 2
3308
2746
PassMark - CPU mark
CPU 1
CPU 2
22917
32670
3DMark Fire Strike - Physics Score
CPU 1
CPU 2
7681
8546
Name Intel Core i9-11900KB AMD Ryzen 9 3900XT
PassMark - Single thread mark 3308 2746
PassMark - CPU mark 22917 32670
3DMark Fire Strike - Physics Score 7681 8546

Compare specifications (specs)

Intel Core i9-11900KB AMD Ryzen 9 3900XT

Essentials

Architecture codename Tiger Lake Zen 2
Launch date Q2'21 July 2020
Launch price (MSRP) $539
Place in performance rating 560 595
Processor Number i9-11900KB
Series 11th Generation Intel Core i9 Processors
Status Launched
Vertical segment Desktop Desktop
OPN PIB 100-100000277WOF

Performance

64 bit support
Base frequency 3.30 GHz 3.8 GHz
Bus Speed 8 GT/s
L1 cache 768 KB
L2 cache 10 MB 6 MB
L3 cache 24 MB 64 MB
Manufacturing process technology 10 nm SuperFin 7 nm
Maximum core temperature 100°C
Maximum frequency 4.90 GHz 4.7 GHz
Number of cores 8 12
Number of threads 16 24
Unlocked

Memory

Max memory channels 2 2
Maximum memory bandwidth 51.2 GB/s
Maximum memory size 128 GB 128 GB
Supported memory types Up to 3200 MT/s DDR4-3200
ECC memory support

Graphics

Execution Units 32
Graphics base frequency 350 MHz
Graphics max dynamic frequency 1.45 GHz
Intel® Quick Sync Video
Processor graphics Intel UHD Graphics for 11th Gen Intel Processors

Graphics interfaces

Number of displays supported 4

Graphics image quality

4K resolution support
Max resolution over DisplayPort 7680x4320@60Hz
Max resolution over eDP 4096 x 2304@60Hz

Graphics API support

DirectX 12
OpenGL 4.6

Compatibility

Configurable TDP-down 55 Watt
Configurable TDP-up 65 Watt
Max number of CPUs in a configuration 1
Package Size 50mm x 26.5mm
Sockets supported FCBGA1787 AM4
Thermal Design Power (TDP) 65 Watt 105 Watt

Peripherals

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

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 64
Intel® AES New Instructions
Intel® Flex Memory Access
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Speed Shift technology
Thermal Monitoring

Virtualization

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