Intel Core i7-10700K vs Intel Core i9-7940X

Comparative analysis of Intel Core i7-10700K and Intel Core i9-7940X 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 i7-10700K

Intel Core i9-7940X

Differences

Reasons to consider the Intel Core i7-10700K

Around 19% higher clock speed: 5.10 GHz vs 4.30 GHz
Around 14% more L1 cache; more data can be stored in the L1 cache for quick access later
Around 32% lower typical power consumption: 125 Watt vs 165 Watt
Around 23% better performance in PassMark - Single thread mark: 3050 vs 2486

Specifications (specs)
Maximum frequency	5.10 GHz vs 4.30 GHz
L1 cache	1 MB vs 64 KB (per core)
Thermal Design Power (TDP)	125 Watt vs 165 Watt
Benchmarks
PassMark - Single thread mark	3050 vs 2486

Reasons to consider the Intel Core i9-7940X

Processor is unlocked, an unlocked multiplier allows for easier overclocking
6 more cores, run more applications at once: 14 vs 8
12 more threads: 28 vs 16
Around 2% higher maximum core temperature: 102°C vs 100°C
7x more L2 cache, more data can be stored in the L2 cache for quick access later
Around 20% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 38% better performance in PassMark - CPU mark: 25944 vs 18777
Around 51% better performance in 3DMark Fire Strike - Physics Score: 10950 vs 7270

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	14 vs 8
Number of threads	28 vs 16
Maximum core temperature	102°C vs 100°C
L2 cache	1024 KB (per core) vs 2 MB
L3 cache	19712 KB (shared) vs 16 MB
Benchmarks
PassMark - CPU mark	25944 vs 18777
3DMark Fire Strike - Physics Score	10950 vs 7270

Compare benchmarks

CPU 1: Intel Core i7-10700K
CPU 2: Intel Core i9-7940X

PassMark - Single thread mark

CPU 1

CPU 2

3050

2486

PassMark - CPU mark

CPU 1

CPU 2

18777

25944

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

7270

10950

Name	Intel Core i7-10700K	Intel Core i9-7940X
PassMark - Single thread mark	3050	2486
PassMark - CPU mark	18777	25944
3DMark Fire Strike - Physics Score	7270	10950
Geekbench 4 - Single Core		1153
Geekbench 4 - Multi-Core		12928

Compare specifications (specs)

	Intel Core i7-10700K	Intel Core i9-7940X
Essentials
Architecture codename	Comet Lake	Skylake
Launch date	Q2'20	September 2017
Launch price (MSRP)	$374 - $387	$1,399
Place in performance rating	696	723
Processor Number	i7-10700K	i9-7940X
Series	10th Generation Intel Core i7 Processors	Intel® Core™ X-series Processors
Status	Launched	Launched
Vertical segment	Desktop	Desktop
Price now		$1,129.99
Value for money (0-100)		6.63
Performance
64 bit support
Base frequency	3.80 GHz	3.10 GHz
Bus Speed	8 GT/s	8 GT/s DMI3
L1 cache	1 MB	64 KB (per core)
L2 cache	2 MB	1024 KB (per core)
L3 cache	16 MB	19712 KB (shared)
Manufacturing process technology	14 nm	14 nm
Maximum core temperature	100°C	102°C
Maximum frequency	5.10 GHz	4.30 GHz
Number of cores	8	14
Number of threads	16	28
Number of QPI Links		0
Unlocked
Memory
Max memory channels	2	4
Maximum memory bandwidth	45.8 GB/s
Maximum memory size	128 GB	128 GB
Supported memory types	DDR4-2933	DDR4-2666
Graphics
Device ID	0x9BC5
Graphics base frequency	350 MHz
Graphics max dynamic frequency	1.20 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 630
Graphics interfaces
Number of displays supported	3
Graphics image quality
4K resolution support
Max resolution over DisplayPort	4096x2304@60Hz
Max resolution over eDP	4096x2304@60Hz
Max resolution over HDMI 1.4	4096x2160@30Hz
Graphics API support
DirectX	12
OpenGL	4.5
Compatibility
Configurable TDP-down	95 Watt
Configurable TDP-down Frequency	3.50 GHz
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm
Sockets supported	FCLGA1200	FCLGA2066
Thermal Design Power (TDP)	125 Watt	165 Watt
Thermal Solution	PCG 2015D	PCG 2017X
Low Halogen Options Available
Peripherals
Max number of PCIe lanes	16	44
PCI Express revision	3.0	3.0
PCIe configurations	Up to 1x16, 2x8, 1x8+2x4
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® 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
Intel® vPro™ Platform Eligibility
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)