Intel Core i5 6600K vs Intel Core i9 9900X

VS

We compared two desktop CPUs: Intel Core i5 6600K with 4 cores 3.5GHz and Intel Core i9 9900X with 10 cores 3.5GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 6600K 's Advantages

Integrated graphics card

Lower TDP (91W vs 165W)

Intel Core i9 9900X 's Advantages

Released 3 years and 2 months late

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

Larger memory bandwidth (85GB/s vs 34.1GB/s)

Larger L3 cache size (20MB vs 6MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 6600K

1043

Intel Core i9 9900X +12%

1178

Cinebench R23 Multi Core

Intel Core i5 6600K

3982

Intel Core i9 9900X +250%

13952

Geekbench 6 Single Core

Intel Core i5 6600K

1314

Intel Core i9 9900X +10%

1455

Geekbench 6 Multi Core

Intel Core i5 6600K

3782

Intel Core i9 9900X +171%

10273

Geekbench 5 Single Core

Intel Core i5 6600K

1125

Intel Core i9 9900X +3%

1165

Geekbench 5 Multi Core

Intel Core i5 6600K

3775

Intel Core i9 9900X +183%

10704

Passmark CPU Single Core

Intel Core i5 6600K

2320

Intel Core i9 9900X +10%

2565

Passmark CPU Multi Core

Intel Core i5 6600K

6289

Intel Core i9 9900X +247%

21833

Intel Core i5 6600K

VS

Intel Core i9 9900X

General Parameters

Aug 2015

Release Date

Oct 2018

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Skylake

i5-6600K

Processor Number

i9-9900X

LGA-1151

Socket

LGA-2066

HD Graphics 530

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-2066

91 W

Power Consumption

165 W

-

Peak Operating Temperature

92 °C

CPU Performance

4

Performance Cores

10

4

Performance Core Threads

20

3.5 GHz

Performance Core Base Frequency

3.5 GHz

3.9 GHz

Performance Core Turbo Frequency

4.4 GHz

4

Total Core Count

10

4

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

35x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

6 MB shared

L3 Cache

20 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133, DDR3L-1600

Memory Types

DDR4-2666

64 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

34.1 GB/s

Max Memory Bandwidth

85 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

-

1150 MHz

GPU Max Dynamic Frequency

-

Miscellaneous

Intel Core i5 6600K

Official Website

Intel Core i9 9900X

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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