Intel Core i5 6400 vs Intel Core i7 12700K

VS

Intel Core i5 6400

Intel Core i7 12700K

We compared two desktop CPUs: Intel Core i5 6400 with 4 cores 2.7GHz and Intel Core i7 12700K with 12 cores 3.6GHz . 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 125W)

Intel Core i7 12700K 's Advantages

Released 6 years and 1 months late

Higher specification of memory (4800 vs 2133)

Larger memory bandwidth (76.8GB/s vs 34.1GB/s)

Newer PCIe version (5.0 vs 3.0)

Higher base frequency (3.6GHz vs 2.7GHz)

Larger L3 cache size (25MB vs 6MB)

More modern manufacturing process (10nm vs 14nm)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 6400

898

Intel Core i7 12700K +116%

1944

Cinebench R23 Multi Core

Intel Core i5 6400

3214

Intel Core i7 12700K +609%

22801

Geekbench 6 Single Core

Intel Core i5 6400

1143

Intel Core i7 12700K +129%

2625

Geekbench 6 Multi Core

Intel Core i5 6400

3312

Intel Core i7 12700K +344%

14728

Blender

Intel Core i5 6400

49

Intel Core i7 12700K +642%

364

Geekbench 5 Single Core

Intel Core i5 6400

853

Intel Core i7 12700K +144%

2084

Geekbench 5 Multi Core

Intel Core i5 6400

2805

Intel Core i7 12700K +452%

15499

Passmark CPU Single Core

Intel Core i5 6400

1961

Intel Core i7 12700K +106%

4040

Passmark CPU Multi Core

Intel Core i5 6400

5151

Intel Core i7 12700K +573%

34674

Intel Core i5 6400

VS

Intel Core i7 12700K

General Parameters

Sep 2015

Release Date

Oct 2021

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Alder Lake

i5-6400

Processor Number

i7-12700K

LGA-1151

Socket

LGA-1700

HD Graphics 530

Integrated Graphics

UHD Graphics 770

Package

14 nm

Manufacturing Process

10 nm

65 W

Power Consumption

125 W

-

Max Turbo Power Consumption

190 W

-

Peak Operating Temperature

100°C

CPU Performance

4

Performance Cores

8

4

Performance Core Threads

16

2.7 GHz

Performance Core Base Frequency

3.6 GHz

3.3 GHz

Performance Core Turbo Frequency

4.9 GHz

-

Efficiency Cores

4

-

Efficiency Core Threads

4

-

Efficiency Core Base Frequency

2.7 GHz

-

Efficiency Core Turbo Frequency

3.8 GHz

4

Total Core Count

12

4

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

27x

Multiplier

36x

64 K per core

L1 Cache

80 K per core

256 K per core

L2 Cache

12 MB shared

6 MB shared

L3 Cache

25 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133, DDR3L-1600

Memory Types

DDR5-4800, DDR4-3200

64 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

34.1 GB/s

Max Memory Bandwidth

76.8 GB/s

No

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

300 MHz

950 MHz

GPU Max Dynamic Frequency

1500 MHz

-

Shader Units

256

-

Texture Units

16

-

Raster Operation Units

8

-

Execution Units

32

-

Power Consumption

15 W

-

Graphics Performance

0.78 TFLOPS

Miscellaneous

Intel Core i5 6400

Official Website

Intel Core i7 12700K

3.0

PCIe Version

5.0

16

PCIe Lanes

20

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

-

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