Intel Core i9 9900X vs Intel Core i7 6900K

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We compared two desktop CPUs: Intel Core i9 9900X with 10 cores 3.5GHz and Intel Core i7 6900K with 8 cores 3.2GHz . 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 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)

Intel Core i7 6900K 's Advantages

Lower TDP (140W vs 165W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 9900X +2%

1178

Intel Core i7 6900K

1151

Cinebench R23 Multi Core

Intel Core i9 9900X +23%

13952

Intel Core i7 6900K

11326

Geekbench 6 Single Core

Intel Core i9 9900X +13%

1455

Intel Core i7 6900K

1286

Geekbench 6 Multi Core

Intel Core i9 9900X +37%

10273

Intel Core i7 6900K

7470

Geekbench 5 Single Core

Intel Core i9 9900X +21%

1165

Intel Core i7 6900K

961

Geekbench 5 Multi Core

Intel Core i9 9900X +46%

10704

Intel Core i7 6900K

7327

Passmark CPU Single Core

Intel Core i9 9900X +11%

2565

Intel Core i7 6900K

2310

Passmark CPU Multi Core

Intel Core i9 9900X +53%

21833

Intel Core i7 6900K

14258

Intel Core i9 9900X

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Intel Core i7 6900K

General Parameters

Oct 2018

Release Date

May 2016

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Broadwell E

i9-9900X

Processor Number

i7-6900K

LGA-2066

Socket

LGA-2011-3

N/A

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-2066

Socket

LGA-2011-3

165 W

Power Consumption

140 W

92 °C

Peak Operating Temperature

-

CPU Performance

10

Performance Cores

8

20

Performance Core Threads

16

3.5 GHz

Performance Core Base Frequency

3.2 GHz

4.4 GHz

Performance Core Turbo Frequency

3.7 GHz

10

Total Core Count

8

20

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

32x

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

20 MB shared

Yes

Unlocked Multiplier

No

Memory Parameters

DDR4-2666

Memory Types

DDR4-2133

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

4

85 GB/s

Max Memory Bandwidth

76.8 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i9 9900X

Official Website

Intel Core i7 6900K

3.0

PCIe Version

3.0

44

PCIe Lanes

40

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

Extended Instruction Set

-

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