Intel Core i7 6900K vs Intel Core i9 9900X

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We compared two desktop CPUs: Intel Core i7 6900K with 8 cores 3.2GHz 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 i7 6900K 's Advantages

Lower TDP (140W vs 165W)

Intel Core i9 9900X 's Advantages

Released 2 years and 5 months late

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

Larger memory bandwidth (85GB/s vs 76.8GB/s)

Higher base frequency (3.5GHz vs 3.2GHz)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 6900K

1151

Intel Core i9 9900X +2%

1178

Cinebench R23 Multi Core

Intel Core i7 6900K

11326

Intel Core i9 9900X +23%

13952

Geekbench 6 Single Core

Intel Core i7 6900K

1286

Intel Core i9 9900X +13%

1455

Geekbench 6 Multi Core

Intel Core i7 6900K

7470

Intel Core i9 9900X +37%

10273

Geekbench 5 Single Core

Intel Core i7 6900K

961

Intel Core i9 9900X +21%

1165

Geekbench 5 Multi Core

Intel Core i7 6900K

7327

Intel Core i9 9900X +46%

10704

Passmark CPU Single Core

Intel Core i7 6900K

2310

Intel Core i9 9900X +11%

2565

Passmark CPU Multi Core

Intel Core i7 6900K

14258

Intel Core i9 9900X +53%

21833

Intel Core i7 6900K

VS

Intel Core i9 9900X

General Parameters

May 2016

Release Date

Oct 2018

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Broadwell E

Core Architecture

Skylake

i7-6900K

Processor Number

i9-9900X

LGA-2011-3

Socket

LGA-2066

N/A

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-2011-3

Socket

LGA-2066

140 W

Power Consumption

165 W

-

Peak Operating Temperature

92 °C

CPU Performance

8

Performance Cores

10

16

Performance Core Threads

20

3.2 GHz

Performance Core Base Frequency

3.5 GHz

3.7 GHz

Performance Core Turbo Frequency

4.4 GHz

8

Total Core Count

10

16

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

32x

Multiplier

35x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

20 MB shared

L3 Cache

20 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

4

76.8 GB/s

Max Memory Bandwidth

85 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i7 6900K

Official Website

Intel Core i9 9900X

3.0

PCIe Version

3.0

40

PCIe Lanes

44

-

Extended Instruction Set

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

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