Intel Core i9-11900KB vs AMD Ryzen 9 3950X

Comparative analysis of Intel Core i9-11900KB and AMD Ryzen 9 3950X 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, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core.

Intel Core i9-11900KB

AMD Ryzen 9 3950X

Differences

Reasons to consider the Intel Core i9-11900KB

Around 4% higher clock speed: 4.90 GHz vs 4.7 GHz
Around 25% 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 22% better performance in PassMark - Single thread mark: 3308 vs 2705

Specifications (specs)
Maximum frequency	4.90 GHz vs 4.7 GHz
L2 cache	10 MB vs 8 MB
Thermal Design Power (TDP)	65 Watt vs 105 Watt
Benchmarks
PassMark - Single thread mark	3308 vs 2705

Reasons to consider the AMD Ryzen 9 3950X

Processor is unlocked, an unlocked multiplier allows for easier overclocking
8 more cores, run more applications at once: 16 vs 8
16 more threads: 32 vs 16
A newer manufacturing process allows for a more powerful, yet cooler running processor: 7 nm vs 10 nm SuperFin
Around 33% more L1 cache; more data can be stored in the L1 cache for quick access later
2.7x more L3 cache, more data can be stored in the L3 cache for quick access later
Around 69% better performance in PassMark - CPU mark: 38749 vs 22917
Around 40% better performance in 3DMark Fire Strike - Physics Score: 10742 vs 7681

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	16 vs 8
Number of threads	32 vs 16
Manufacturing process technology	7 nm vs 10 nm SuperFin
L1 cache	1 MB vs 768 KB
L3 cache	64 MB vs 24 MB
Benchmarks
PassMark - CPU mark	38749 vs 22917
3DMark Fire Strike - Physics Score	10742 vs 7681

Compare benchmarks

CPU 1: Intel Core i9-11900KB
CPU 2: AMD Ryzen 9 3950X

PassMark - Single thread mark

CPU 1

CPU 2

3308

2705

PassMark - CPU mark

CPU 1

CPU 2

22917

38749

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

7681

10742

Name	Intel Core i9-11900KB	AMD Ryzen 9 3950X
PassMark - Single thread mark	3308	2705
PassMark - CPU mark	22917	38749
3DMark Fire Strike - Physics Score	7681	10742
Geekbench 4 - Single Core		1296
Geekbench 4 - Multi-Core		14150

Compare specifications (specs)

	Intel Core i9-11900KB	AMD Ryzen 9 3950X
Essentials
Architecture codename	Tiger Lake	Zen 2
Launch date	Q2'21	25 Nov 2019
Launch price (MSRP)	$539	$749
Place in performance rating	560	586
Processor Number	i9-11900KB
Series	11th Generation Intel Core i9 Processors
Status	Launched
Vertical segment	Desktop	Desktop
OPN PIB		100-100000051WOF
OPN Tray		100-000000051
Performance
64 bit support
Base frequency	3.30 GHz	3.5 GHz
Bus Speed	8 GT/s
L1 cache	768 KB	1 MB
L2 cache	10 MB	8 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	16
Number of threads	16	32
Unlocked
Memory
Max memory channels	2	2
Maximum memory bandwidth	51.2 GB/s
Maximum memory size	128 GB
Supported memory types	Up to 3200 MT/s	DDR4-3200
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	40
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)