Intel Core i5 8400T vs Intel Core i9 7900X

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We compared two desktop CPUs: Intel Core i5 8400T with 6 cores 1.7GHz and Intel Core i9 7900X with 10 cores 3.3GHz . 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 11 months late

Integrated graphics card

Lower TDP (35W vs 140W)

Intel Core i9 7900X 's Advantages

Larger memory bandwidth (79.47GB/s vs 41.6GB/s)

Higher base frequency (3.3GHz vs 1.7GHz)

Larger L3 cache size (14MB vs 9MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 8400T

774

Intel Core i9 7900X +55%

1203

Cinebench R23 Multi Core

Intel Core i5 8400T

3638

Intel Core i9 7900X +224%

11804

Geekbench 6 Single Core

Intel Core i5 8400T

1120

Intel Core i9 7900X +18%

1323

Geekbench 6 Multi Core

Intel Core i5 8400T

3670

Intel Core i9 7900X +132%

8536

Geekbench 5 Single Core

Intel Core i5 8400T

886

Intel Core i9 7900X +27%

1127

Geekbench 5 Multi Core

Intel Core i5 8400T

4000

Intel Core i9 7900X +154%

10189

Passmark CPU Single Core

Intel Core i5 8400T

1917

Intel Core i9 7900X +33%

2556

Passmark CPU Multi Core

Intel Core i5 8400T

7447

Intel Core i9 7900X +181%

20991

Intel Core i5 8400T

VS

Intel Core i9 7900X

General Parameters

Apr 2018

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Coffee Lake

Core Architecture

Skylake

i5-8400T

Processor Number

i9-7900X

LGA-1151

Socket

LGA-2066

UHD Graphics 630

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-2066

35 W

Power Consumption

140 W

100 °C

Peak Operating Temperature

95 °C

CPU Performance

6

Performance Cores

10

6

Performance Core Threads

20

1.7 GHz

Performance Core Base Frequency

3.3 GHz

Performance Core Turbo Frequency

4.3 GHz

6

Total Core Count

10

6

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

17x

Multiplier

33x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

9 MB shared

L3 Cache

14 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

41.6 GB/s

Max Memory Bandwidth

79.47 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

-

350 MHz

GPU Base Frequency

-

1050 MHz

GPU Max Dynamic Frequency

-

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 i9 7900X

3.0

PCIe Version

3.0

16

PCIe Lanes

44

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2, AVX-512

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