Intel Core i5-11600KF vs Intel Core i9-9940X

Comparative analysis of Intel Core i5-11600KF and Intel Core i9-9940X processors for all known characteristics in the following categories: Essentials, Performance, Memory, 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 i5-11600KF

Intel Core i9-9940X

Differences

Reasons to consider the Intel Core i5-11600KF

CPU is newer: launch date 2 year(s) 5 month(s) later
Around 11% higher clock speed: 4.90 GHz vs 4.40 GHz
Around 14% higher maximum core temperature: 100°C vs 88°C
Around 32% lower typical power consumption: 125 Watt vs 165 Watt
Around 27% better performance in PassMark - Single thread mark: 3340 vs 2628

Specifications (specs)
Launch date	16 Mar 2021 vs October 2018
Maximum frequency	4.90 GHz vs 4.40 GHz
Maximum core temperature	100°C vs 88°C
Thermal Design Power (TDP)	125 Watt vs 165 Watt
Benchmarks
PassMark - Single thread mark	3340 vs 2628

Reasons to consider the Intel Core i9-9940X

Processor is unlocked, an unlocked multiplier allows for easier overclocking
8 more cores, run more applications at once: 14 vs 6
16 more threads: 28 vs 12
2.3x more L1 cache, more data can be stored in the L1 cache for quick access later
9.3x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 60% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 43% better performance in PassMark - CPU mark: 27975 vs 19629
Around 82% better performance in 3DMark Fire Strike - Physics Score: 11442 vs 6273

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	14 vs 6
Number of threads	28 vs 12
L1 cache	64K (per core) vs 384 KB
L2 cache	1 MB (per core) vs 1.5 MB
L3 cache	19.25 MB (shared) vs 12 MB
Benchmarks
PassMark - CPU mark	27975 vs 19629
3DMark Fire Strike - Physics Score	11442 vs 6273

Compare benchmarks

CPU 1: Intel Core i5-11600KF
CPU 2: Intel Core i9-9940X

PassMark - Single thread mark

CPU 1

CPU 2

3340

2628

PassMark - CPU mark

CPU 1

CPU 2

19629

27975

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

6273

11442

Name	Intel Core i5-11600KF	Intel Core i9-9940X
PassMark - Single thread mark	3340	2628
PassMark - CPU mark	19629	27975
3DMark Fire Strike - Physics Score	6273	11442
Geekbench 4 - Single Core		1140
Geekbench 4 - Multi-Core		13302

Compare specifications (specs)

	Intel Core i5-11600KF	Intel Core i9-9940X
Essentials
Architecture codename	Rocket Lake	Skylake
Launch date	16 Mar 2021	October 2018
Launch price (MSRP)	$237 - $247
Place in performance rating	663	680
Processor Number	i5-11600KF	i9-9940X
Series	11th Generation Intel Core i5 Processors	Intel® Core™ X-series Processors
Status	Launched	Launched
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.90 GHz	3.30 GHz
Bus Speed	8 GT/s	8 GT/s DMI3
L1 cache	384 KB	64K (per core)
L2 cache	1.5 MB	1 MB (per core)
L3 cache	12 MB	19.25 MB (shared)
Manufacturing process technology	14 nm	14 nm
Maximum core temperature	100°C	88°C
Maximum frequency	4.90 GHz	4.40 GHz
Number of cores	6	14
Number of threads	12	28
Number of QPI Links		0
Unlocked
Memory
Max memory channels	2	4
Maximum memory bandwidth	50 GB/s
Maximum memory size	128 GB	128 GB
Supported memory types	DDR4-3200	DDR4-2666
Compatibility
Configurable TDP-down	95 Watt
Configurable TDP-down Frequency	3.60 GHz
Max number of CPUs in a configuration	1	1
Package Size	37.5 mm x 37.5 mm
Sockets supported	FCLGA1200	FCLGA2066
Thermal Design Power (TDP)	125 Watt	165 Watt
Thermal Solution	PCG 2019A	PCG 2017X
Peripherals
Max number of PCIe lanes	20	44
PCI Express revision	4.0	3.0
PCIe configurations	Up to 1x16+1x4, 2x8+1x4, 1x8+3x4
Scalability	1S Only	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® 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
Intel® Advanced Vector Extensions (AVX)
Number of AVX-512 FMA Units		2
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)