Intel Core i5-7400 vs Intel Core i7-6900K

Comparative analysis of Intel Core i5-7400 and Intel Core i7-6900K 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, Geekbench 4 - Single Core, Geekbench 4 - Multi-Core, 3DMark Fire Strike - Physics Score, CompuBench 1.5 Desktop - Face Detection (mPixels/s), CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s), CompuBench 1.5 Desktop - T-Rex (Frames/s), CompuBench 1.5 Desktop - Video Composition (Frames/s), CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s), GFXBench 4.0 - Car Chase Offscreen (Frames), GFXBench 4.0 - Manhattan (Frames), GFXBench 4.0 - T-Rex (Frames), GFXBench 4.0 - Car Chase Offscreen (Fps), GFXBench 4.0 - Manhattan (Fps), GFXBench 4.0 - T-Rex (Fps).

Intel Core i5-7400

Intel Core i7-6900K

Differences

Reasons to consider the Intel Core i5-7400

CPU is newer: launch date 8 month(s) later
2.2x lower typical power consumption: 65 Watt vs 140 Watt

Launch date	January 2017 vs May 2016
Thermal Design Power (TDP)	65 Watt vs 140 Watt

Reasons to consider the Intel Core i7-6900K

Processor is unlocked, an unlocked multiplier allows for easier overclocking
4 more cores, run more applications at once: 8 vs 4
12 more threads: 16 vs 4
Around 6% higher clock speed: 3.70 GHz vs 3.50 GHz
2x more L2 cache, more data can be stored in the L2 cache for quick access later
3.3x more L3 cache, more data can be stored in the L3 cache for quick access later
2x more maximum memory size: 128 GB vs 64 GB
Around 12% better performance in PassMark - Single thread mark: 2329 vs 2083
2.6x better performance in PassMark - CPU mark: 14476 vs 5473
Around 14% better performance in Geekbench 4 - Single Core: 1005 vs 881
2.8x better performance in Geekbench 4 - Multi-Core: 7893 vs 2786
4.2x better performance in 3DMark Fire Strike - Physics Score: 8778 vs 2078
3x better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 10.395 vs 3.523
2.4x better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 179.127 vs 74.155
2.9x better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 1.3 vs 0.441
2.4x better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 5.194 vs 2.201
2.3x better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 13.602 vs 5.905

Specifications (specs)
Unlocked	Unlocked vs Locked
Number of cores	8 vs 4
Number of threads	16 vs 4
Maximum frequency	3.70 GHz vs 3.50 GHz
L2 cache	256 KB (per core) vs 256 KB (per core)
L3 cache	20480 KB (shared) vs 6144 KB (shared)
Maximum memory size	128 GB vs 64 GB
Benchmarks
PassMark - Single thread mark	2329 vs 2083
PassMark - CPU mark	14476 vs 5473
Geekbench 4 - Single Core	1005 vs 881
Geekbench 4 - Multi-Core	7893 vs 2786
3DMark Fire Strike - Physics Score	8778 vs 2078
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	10.395 vs 3.523
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	179.127 vs 74.155
CompuBench 1.5 Desktop - T-Rex (Frames/s)	1.3 vs 0.441
CompuBench 1.5 Desktop - Video Composition (Frames/s)	5.194 vs 2.201
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	13.602 vs 5.905

Compare benchmarks

CPU 1: Intel Core i5-7400
CPU 2: Intel Core i7-6900K

PassMark - Single thread mark

CPU 1

CPU 2

2083

2329

PassMark - CPU mark

CPU 1

CPU 2

5473

14476

Geekbench 4 - Single Core

CPU 1

CPU 2

881

1005

Geekbench 4 - Multi-Core

CPU 1

CPU 2

2786

7893

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

2078

8778

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

3.523

10.395

CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)

CPU 1

CPU 2

74.155

179.127

CompuBench 1.5 Desktop - T-Rex (Frames/s)

CPU 1

CPU 2

0.441

1.3

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

2.201

5.194

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

5.905

13.602

Name	Intel Core i5-7400	Intel Core i7-6900K
PassMark - Single thread mark	2083	2329
PassMark - CPU mark	5473	14476
Geekbench 4 - Single Core	881	1005
Geekbench 4 - Multi-Core	2786	7893
3DMark Fire Strike - Physics Score	2078	8778
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	3.523	10.395
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	74.155	179.127
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.441	1.3
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.201	5.194
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	5.905	13.602
GFXBench 4.0 - Car Chase Offscreen (Frames)	1706
GFXBench 4.0 - Manhattan (Frames)	3128
GFXBench 4.0 - T-Rex (Frames)	5712
GFXBench 4.0 - Car Chase Offscreen (Fps)	1706
GFXBench 4.0 - Manhattan (Fps)	3128
GFXBench 4.0 - T-Rex (Fps)	5712

Compare specifications (specs)

	Intel Core i5-7400	Intel Core i7-6900K
Essentials
Architecture codename	Kaby Lake	Broadwell E
Launch date	January 2017	May 2016
Launch price (MSRP)	$202	$1,020
Place in performance rating	1409	1400
Price now	$208.31	$1,198.99
Processor Number	i5-7400	i7-6900K
Series	7th Generation Intel® Core™ i5 Processors	Intel® Core™ X-series Processors
Status	Launched	Discontinued
Value for money (0-100)	10.39	4.35
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	3.00 GHz	3.20 GHz
Bus Speed	8 GT/s DMI3
L1 cache	64 KB (per core)	32 KB (per core)
L2 cache	256 KB (per core)	256 KB (per core)
L3 cache	6144 KB (shared)	20480 KB (shared)
Manufacturing process technology	14 nm	14 nm
Maximum case temperature (TCase)	72 °C	72 °C
Maximum core temperature	100°C
Maximum frequency	3.50 GHz	3.70 GHz
Number of cores	4	8
Number of QPI Links	0
Number of threads	4	16
Unlocked
Memory
Max memory channels	2	4
Maximum memory size	64 GB	128 GB
Supported memory types	DDR4-2133/2400, DDR3L-1333/1600 @ 1.35V	DDR4 2400/2133
Graphics
Device ID	0x5912
Graphics base frequency	350 MHz
Graphics max dynamic frequency	1.00 GHz
Graphics max frequency	1 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® HD Graphics 630	None
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	4096x2304@24Hz
Graphics API support
DirectX	12
OpenGL	4.5
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm
Sockets supported	FCLGA1151	FCLGA2011-3
Thermal Design Power (TDP)	65 Watt	140 Watt
Thermal Solution	PCG 2015C (65W)
Peripherals
Max number of PCIe lanes	16	40
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® Memory Protection Extensions (Intel® MPX)
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® Advanced Vector Extensions (AVX)
Intel® AES New Instructions
Intel® Hyper-Threading technology
Intel® Optane™ Memory Supported
Intel® Stable Image Platform Program (SIPP)
Intel® TSX-NI
Intel® Turbo Boost technology
Intel® vPro™ Platform Eligibility
Thermal Monitoring
Intel® Smart Response technology
Turbo Boost Max 3.0
Virtualization
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)