Intel Core i5 8400T vs Intel Core i5 6400

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We compared two desktop CPUs: Intel Core i5 8400T with 6 cores 1.7GHz and Intel Core i5 6400 with 4 cores 2.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 8400T 's Advantages

Released 2 years and 7 months late

Higher specification of memory (DDR4-2666 vs DDR4-2133)

Larger memory bandwidth (41.6GB/s vs 34.1GB/s)

Larger L3 cache size (9MB vs 6MB)

Lower TDP (35W vs 65W)

Intel Core i5 6400 's Advantages

Higher base frequency (2.7GHz vs 1.7GHz)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 8400T

774

Intel Core i5 6400 +16%

898

Cinebench R23 Multi Core

Intel Core i5 8400T +13%

3638

Intel Core i5 6400

3214

Geekbench 6 Single Core

Intel Core i5 8400T

1120

Intel Core i5 6400 +2%

1143

Geekbench 6 Multi Core

Intel Core i5 8400T +10%

3670

Intel Core i5 6400

3312

Blender

Intel Core i5 8400T

35

Intel Core i5 6400 +17%

41

Geekbench 5 Single Core

Intel Core i5 8400T +3%

886

Intel Core i5 6400

853

Geekbench 5 Multi Core

Intel Core i5 8400T +42%

4000

Intel Core i5 6400

2805

Passmark CPU Single Core

Intel Core i5 8400T

1917

Intel Core i5 6400 +2%

1961

Passmark CPU Multi Core

Intel Core i5 8400T +44%

7447

Intel Core i5 6400

5151

Intel Core i5 8400T

VS

Intel Core i5 6400

General Parameters

Apr 2018

Release Date

Sep 2015

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Coffee Lake

Core Architecture

Skylake

i5-8400T

Processor Number

i5-6400

LGA-1151

Socket

LGA-1151

UHD Graphics 630

Integrated Graphics

HD Graphics 530

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-1151

35 W

Power Consumption

65 W

100 °C

Peak Operating Temperature

-

CPU Performance

6

Performance Cores

4

6

Performance Core Threads

4

1.7 GHz

Performance Core Base Frequency

2.7 GHz

3.3 GHz

Performance Core Turbo Frequency

3.3 GHz

6

Total Core Count

4

6

Total Thread Count

4

100 MHz

Bus Frequency

100 MHz

17x

Multiplier

27x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

9 MB shared

L3 Cache

6 MB shared

No

Unlocked Multiplier

No

Memory Parameters

DDR4-2666

Memory Types

DDR4-2133, DDR3L-1600

128 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

41.6 GB/s

Max Memory Bandwidth

34.1 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

350 MHz

GPU Base Frequency

-

1050 MHz

GPU Max Dynamic Frequency

950 MHz

192

Shader Units

-

24

Texture Units

-

3

Raster Operation Units

-

24

Execution Units

-

15 W

Power Consumption

-

4096x2304 - 60 Hz

Max Resolution

-

0.38 TFLOPS

Graphics Performance

-

Miscellaneous

Intel Core i5 8400T

Official Website

Intel Core i5 6400

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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