Intel Core i9 9900X vs Intel Core i5 8600K

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We compared two desktop CPUs: Intel Core i9 9900X with 10 cores 3.5GHz and Intel Core i5 8600K with 6 cores 3.6GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 9900X 's Advantages

Released 1 years late

Larger memory bandwidth (85GB/s vs 41.6GB/s)

Larger L3 cache size (20MB vs 9MB)

Intel Core i5 8600K 's Advantages

Integrated graphics card

Higher base frequency (3.6GHz vs 3.5GHz)

Lower TDP (95W vs 165W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 9900X

1178

Intel Core i5 8600K +2%

1213

Cinebench R23 Multi Core

Intel Core i9 9900X +110%

13952

Intel Core i5 8600K

6632

Geekbench 6 Single Core

Intel Core i9 9900X

1455

Intel Core i5 8600K +13%

1649

Geekbench 6 Multi Core

Intel Core i9 9900X +69%

10273

Intel Core i5 8600K

6050

Geekbench 5 Single Core

Intel Core i9 9900X

1165

Intel Core i5 8600K

1163

Geekbench 5 Multi Core

Intel Core i9 9900X +99%

10704

Intel Core i5 8600K

5367

Passmark CPU Single Core

Intel Core i9 9900X

2565

Intel Core i5 8600K +1%

2603

Passmark CPU Multi Core

Intel Core i9 9900X +114%

21833

Intel Core i5 8600K

10201

Intel Core i9 9900X

VS

Intel Core i5 8600K

General Parameters

Oct 2018

Release Date

Oct 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Coffee Lake

i9-9900X

Processor Number

i5-8600K

LGA-2066

Socket

LGA-1151

N/A

Integrated Graphics

UHD Graphics 630

Package

14 nm

Manufacturing Process

14 nm

LGA-2066

Socket

LGA-1151

165 W

Power Consumption

95 W

92 °C

Peak Operating Temperature

100 °C

CPU Performance

10

Performance Cores

6

20

Performance Core Threads

6

3.5 GHz

Performance Core Base Frequency

3.6 GHz

4.4 GHz

Performance Core Turbo Frequency

4.3 GHz

10

Total Core Count

6

20

Total Thread Count

6

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

36x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

256 K per core

20 MB shared

L3 Cache

9 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

2

85 GB/s

Max Memory Bandwidth

41.6 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

-

Integrated Graphics

true

-

GPU Base Frequency

350 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

0.38 TFLOPS

Miscellaneous

Intel Core i9 9900X

Official Website

Intel Core i5 8600K

3.0

PCIe Version

3.0

44

PCIe Lanes

16

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

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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