Intel Core i9 14900K vs Intel Core i5 8400

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We compared two desktop CPUs: Intel Core i9 14900K with 24 cores 3.2GHz and Intel Core i5 8400 with 6 cores 2.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 14900K 's Advantages

Released 6 years late

Better graphics card performance

Higher specification of memory (DDR5-5600 vs DDR4-2666)

Larger memory bandwidth (89.6GB/s vs 41.6GB/s)

Newer PCIe version (5.0 vs 3.0)

Higher base frequency (3.2GHz vs 2.8GHz)

Larger L3 cache size (36MB vs 9MB)

More modern manufacturing process (10nm vs 14nm)

Intel Core i5 8400 's Advantages

Lower TDP (65W vs 125W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 14900K +130%

2358

Intel Core i5 8400

1021

Cinebench R23 Multi Core

Intel Core i9 14900K +563%

38497

Intel Core i5 8400

5804

Geekbench 6 Single Core

Intel Core i9 14900K +144%

3169

Intel Core i5 8400

1298

Geekbench 6 Multi Core

Intel Core i9 14900K +384%

22637

Intel Core i5 8400

4677

Blender

Intel Core i9 14900K +704%

652

Intel Core i5 8400

81

Passmark CPU Single Core

Intel Core i9 14900K +99%

4770

Intel Core i5 8400

2387

Passmark CPU Multi Core

Intel Core i9 14900K +563%

61120

Intel Core i5 8400

9214

Intel Core i9 14900K

VS

Intel Core i5 8400

General Parameters

Oct 2023

Release Date

Oct 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Raptor Lake Refresh

Core Architecture

Coffee Lake

i9-14900K

Processor Number

i5-8400

LGA-1700

Socket

LGA-1151

UHD Graphics 770

Integrated Graphics

UHD Graphics 630

Core i9 (Raptor Lake Refresh)

Generation

-

Package

10 nm

Manufacturing Process

14 nm

LGA-1700

Socket

LGA-1151

125 W

Power Consumption

65 W

253 W

Max Turbo Power Consumption

-

100°C

Peak Operating Temperature

100 °C

Intel

Foundry

-

257 mm²

Die Size

-

FC-LGA16A

Package

-

CPU Performance

8

Performance Cores

6

16

Performance Core Threads

6

3.2 GHz

Performance Core Base Frequency

2.8 GHz

6 GHz

Performance Core Turbo Frequency

4 GHz

16

Efficiency Cores

-

16

Efficiency Core Threads

-

2.4 GHz

Efficiency Core Base Frequency

-

4.4 GHz

Efficiency Core Turbo Frequency

-

24

Total Core Count

6

32

Total Thread Count

6

100 MHz

Bus Frequency

100 MHz

32x

Multiplier

28x

80 K per core

L1 Cache

64 K per core

2 MB per core

L2 Cache

256 K per core

36 MB shared

L3 Cache

9 MB shared

Yes

Unlocked Multiplier

No

1

SMP

-

Memory Parameters

DDR5-5600, DDR4-3200

Memory Types

DDR4-2666

192 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

89.6 GB/s

Max Memory Bandwidth

41.6 GB/s

Yes

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

300 MHz

GPU Base Frequency

350 MHz

1650 MHz

GPU Max Dynamic Frequency

1050 MHz

256

Shader Units

192

16

Texture Units

24

8

Raster Operation Units

3

32

Execution Units

24

15 W

Power Consumption

15 W

-

Max Resolution

4096x2304 - 60 Hz

0.78 TFLOPS

Graphics Performance

0.38 TFLOPS

Miscellaneous

Intel Core i9 14900K

Official Website

Intel Core i5 8400

5.0

PCIe Version

3.0

20

PCIe Lanes

16

-

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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