Intel Core i7-6700K vs Intel Core i5-6400

Comparative analysis of Intel Core i7-6700K and Intel Core i5-6400 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 i7-6700K

Intel Core i5-6400

Differences

Reasons to consider the Intel Core i7-6700K

CPU is newer: launch date 1 month(s) later
Processor is unlocked, an unlocked multiplier allows for easier overclocking
4 more threads: 8 vs 4
Around 27% higher clock speed: 4.20 GHz vs 3.30 GHz
Around 33% more L3 cache; more data can be stored in the L3 cache for quick access later
Around 28% better performance in PassMark - Single thread mark: 2504 vs 1953
Around 73% better performance in PassMark - CPU mark: 8939 vs 5171
Around 38% better performance in Geekbench 4 - Single Core: 1148 vs 831
Around 66% better performance in Geekbench 4 - Multi-Core: 4458 vs 2685
Around 11% better performance in 3DMark Fire Strike - Physics Score: 3231 vs 2922
Around 89% better performance in CompuBench 1.5 Desktop - Face Detection (mPixels/s): 6.186 vs 3.265
Around 46% better performance in CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s): 101.6 vs 69.471
Around 81% better performance in CompuBench 1.5 Desktop - T-Rex (Frames/s): 0.743 vs 0.41
Around 46% better performance in CompuBench 1.5 Desktop - Video Composition (Frames/s): 2.939 vs 2.013
Around 37% better performance in CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s): 7.351 vs 5.356
Around 32% better performance in GFXBench 4.0 - Car Chase Offscreen (Frames): 1760 vs 1336
Around 45% better performance in GFXBench 4.0 - Manhattan (Frames): 3294 vs 2278
Around 32% better performance in GFXBench 4.0 - Car Chase Offscreen (Fps): 1760 vs 1336
Around 45% better performance in GFXBench 4.0 - Manhattan (Fps): 3294 vs 2278

Specifications (specs)
Launch date	5 August 2015 vs July 2015
Unlocked	Unlocked vs Locked
Number of threads	8 vs 4
Maximum frequency	4.20 GHz vs 3.30 GHz
L3 cache	8 MB vs 6144 KB (shared)
Benchmarks
PassMark - Single thread mark	2504 vs 1953
PassMark - CPU mark	8939 vs 5171
Geekbench 4 - Single Core	1148 vs 831
Geekbench 4 - Multi-Core	4458 vs 2685
3DMark Fire Strike - Physics Score	3231 vs 2922
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	6.186 vs 3.265
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	101.6 vs 69.471
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.743 vs 0.41
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.939 vs 2.013
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	7.351 vs 5.356
GFXBench 4.0 - Car Chase Offscreen (Frames)	1760 vs 1336
GFXBench 4.0 - Manhattan (Frames)	3294 vs 2278
GFXBench 4.0 - Car Chase Offscreen (Fps)	1760 vs 1336
GFXBench 4.0 - Manhattan (Fps)	3294 vs 2278

Reasons to consider the Intel Core i5-6400

Around 11% higher maximum core temperature: 71°C vs 64°C
Around 40% lower typical power consumption: 65 Watt vs 91 Watt
Around 27% better performance in GFXBench 4.0 - T-Rex (Frames): 4275 vs 3360
Around 27% better performance in GFXBench 4.0 - T-Rex (Fps): 4275 vs 3360

Specifications (specs)
Maximum core temperature	71°C vs 64°C
Thermal Design Power (TDP)	65 Watt vs 91 Watt
Benchmarks
GFXBench 4.0 - T-Rex (Frames)	4275 vs 3360
GFXBench 4.0 - T-Rex (Fps)	4275 vs 3360

Compare benchmarks

CPU 1: Intel Core i7-6700K
CPU 2: Intel Core i5-6400

PassMark - Single thread mark

CPU 1

CPU 2

2504

1953

PassMark - CPU mark

CPU 1

CPU 2

8939

5171

Geekbench 4 - Single Core

CPU 1

CPU 2

1148

831

Geekbench 4 - Multi-Core

CPU 1

CPU 2

4458

2685

3DMark Fire Strike - Physics Score

CPU 1

CPU 2

3231

2922

CompuBench 1.5 Desktop - Face Detection (mPixels/s)

CPU 1

CPU 2

6.186

3.265

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

CPU 1

CPU 2

101.6

69.471

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

CPU 1

CPU 2

0.743

0.41

CompuBench 1.5 Desktop - Video Composition (Frames/s)

CPU 1

CPU 2

2.939

2.013

CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)

CPU 1

CPU 2

7.351

5.356

GFXBench 4.0 - Car Chase Offscreen (Frames)

CPU 1

CPU 2

1760

1336

GFXBench 4.0 - Manhattan (Frames)

CPU 1

CPU 2

3294

2278

GFXBench 4.0 - T-Rex (Frames)

CPU 1

CPU 2

3360

4275

GFXBench 4.0 - Car Chase Offscreen (Fps)

CPU 1

CPU 2

1760

1336

GFXBench 4.0 - Manhattan (Fps)

CPU 1

CPU 2

3294

2278

GFXBench 4.0 - T-Rex (Fps)

CPU 1

CPU 2

3360

4275

Name	Intel Core i7-6700K	Intel Core i5-6400
PassMark - Single thread mark	2504	1953
PassMark - CPU mark	8939	5171
Geekbench 4 - Single Core	1148	831
Geekbench 4 - Multi-Core	4458	2685
3DMark Fire Strike - Physics Score	3231	2922
CompuBench 1.5 Desktop - Face Detection (mPixels/s)	6.186	3.265
CompuBench 1.5 Desktop - Ocean Surface Simulation (Frames/s)	101.6	69.471
CompuBench 1.5 Desktop - T-Rex (Frames/s)	0.743	0.41
CompuBench 1.5 Desktop - Video Composition (Frames/s)	2.939	2.013
CompuBench 1.5 Desktop - Bitcoin Mining (mHash/s)	7.351	5.356
GFXBench 4.0 - Car Chase Offscreen (Frames)	1760	1336
GFXBench 4.0 - Manhattan (Frames)	3294	2278
GFXBench 4.0 - T-Rex (Frames)	3360	4275
GFXBench 4.0 - Car Chase Offscreen (Fps)	1760	1336
GFXBench 4.0 - Manhattan (Fps)	3294	2278
GFXBench 4.0 - T-Rex (Fps)	3360	4275

Compare specifications (specs)

	Intel Core i7-6700K	Intel Core i5-6400
Essentials
Architecture codename	Skylake	Skylake
Launch date	5 August 2015	July 2015
Launch price (MSRP)	$339	$185
Place in performance rating	1343	1672
Price now	$316.99	$199
Processor Number	i7-6700K	i5-6400
Series	6th Generation Intel® Core™ i7 Processors	6th Generation Intel® Core™ i5 Processors
Status	Discontinued	Launched
Value for money (0-100)	10.33	10.01
Vertical segment	Desktop	Desktop
Performance
64 bit support
Base frequency	4.00 GHz	2.70 GHz
Bus Speed	8 GT/s DMI3	8 GT/s DMI3
L1 cache	256 KB	64 KB (per core)
L2 cache	1 MB	256 KB (per core)
L3 cache	8 MB	6144 KB (shared)
Manufacturing process technology	14 nm	14 nm
Maximum case temperature (TCase)	72 °C	72 °C
Maximum core temperature	64°C	71°C
Maximum frequency	4.20 GHz	3.30 GHz
Number of cores	4	4
Number of QPI Links	0
Number of threads	8	4
Unlocked
Die size		177 mm
Memory
Max memory channels	2	2
Maximum memory bandwidth	34.1 GB/s	34.1 GB/s
Maximum memory size	64 GB	64 GB
Supported memory types	DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V	DDR4-1866/2133, DDR3L-1333/1600 @ 1.35V
Graphics
Device ID	0x1912	0x1912
Graphics base frequency	350 MHz	350 MHz
Graphics max dynamic frequency	1.15 GHz	950 MHz
Graphics max frequency	1.15 GHz	950 MHz
Intel® Clear Video HD technology
Intel® Clear Video technology
Intel® InTru™ 3D technology
Intel® Quick Sync Video
Max video memory	64 GB	64 GB
Processor graphics	Intel® HD Graphics 530	Intel® HD Graphics 530
Graphics interfaces
DisplayPort
DVI
eDP
HDMI
Number of displays supported	3	3
Wireless Display (WiDi) support
Graphics image quality
4K resolution support
Max resolution over DisplayPort	4096x2304@60Hz	4096x2304@60Hz
Max resolution over eDP	4096x2304@60Hz	4096x2304@60Hz
Max resolution over HDMI 1.4	4096x2304@24Hz	4096x2304@24Hz
Max resolution over VGA	N / A	N / A
Max resolution over WiDi	1080p	1080p
Graphics API support
DirectX	12	12
OpenGL	4.5	4.5
Compatibility
Low Halogen Options Available
Max number of CPUs in a configuration	1	1
Package Size	37.5mm x 37.5mm	37.5mm x 37.5mm
Sockets supported	FCLGA1151	FCLGA1151
Thermal Design Power (TDP)	91 Watt	65 Watt
Thermal Solution	PCG 2015D (130W)	PCG 2015C (65W)
Peripherals
Max number of PCIe lanes	16	16
PCI Express revision	3.0	3.0
PCIe configurations	Up to 1x16, 2x8, 1x8+2x4	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® 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
Virtualization
AMD Virtualization (AMD-V™)
Intel® Virtualization Technology (VT-x)
Intel® Virtualization Technology for Directed I/O (VT-d)
Intel® VT-x with Extended Page Tables (EPT)