Intel Core i5 6400 vs Intel Core i7 7700K

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We compared two desktop CPUs: Intel Core i5 6400 with 4 cores 2.7GHz and Intel Core i7 7700K with 4 cores 4.2GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 6400 's Advantages

Lower TDP (65W vs 91W)

Intel Core i7 7700K 's Advantages

Released 1 years and 4 months late

Higher specification of memory (DDR4-2400 vs DDR4-2133)

Larger memory bandwidth (35.76GB/s vs 34.1GB/s)

Higher base frequency (4.2GHz vs 2.7GHz)

Larger L3 cache size (8MB vs 6MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 6400

898

Intel Core i7 7700K +35%

1215

Cinebench R23 Multi Core

Intel Core i5 6400

3214

Intel Core i7 7700K +83%

5904

Geekbench 6 Single Core

Intel Core i5 6400

1143

Intel Core i7 7700K +36%

1557

Geekbench 6 Multi Core

Intel Core i5 6400

3312

Intel Core i7 7700K +58%

5260

Blender

Intel Core i5 6400

41

Intel Core i7 7700K +148%

102

Geekbench 5 Single Core

Intel Core i5 6400

853

Intel Core i7 7700K +32%

1129

Geekbench 5 Multi Core

Intel Core i5 6400

2805

Intel Core i7 7700K +67%

4705

Passmark CPU Single Core

Intel Core i5 6400

1961

Intel Core i7 7700K +38%

2712

Passmark CPU Multi Core

Intel Core i5 6400

5151

Intel Core i7 7700K +86%

9594

Intel Core i5 6400

VS

Intel Core i7 7700K

General Parameters

Sep 2015

Release Date

Jan 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Kaby Lake

i5-6400

Processor Number

i7-7700K

LGA-1151

Socket

LGA-1151

HD Graphics 530

Integrated Graphics

HD Graphics 630

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-1151

65 W

Power Consumption

91 W

-

Peak Operating Temperature

100 °C

CPU Performance

4

Performance Cores

4

Performance Core Threads

8

2.7 GHz

Performance Core Base Frequency

4.2 GHz

3.3 GHz

Performance Core Turbo Frequency

4.5 GHz

4

Total Core Count

4

Total Thread Count

8

100 MHz

Bus Frequency

42 MHz

27x

Multiplier

100x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

6 MB shared

L3 Cache

8 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133, DDR3L-1600

Memory Types

DDR4-2400, DDR3L-1600

64 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

34.1 GB/s

Max Memory Bandwidth

35.76 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

350 MHz

950 MHz

GPU Max Dynamic Frequency

1150 MHz

-

Shader Units

192

-

Texture Units

24

-

Raster Operation Units

3

-

Execution Units

24

-

Power Consumption

15 W

-

Max Resolution

4096x2304 - 60 Hz

-

Graphics Performance

0.44 TFLOPS

Miscellaneous

Intel Core i5 6400

Official Website

Intel Core i7 7700K

3.0

PCIe Version

3.0

16

PCIe Lanes

16

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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