Intel Core i9 9900K vs Intel Core i9 7900X

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We compared two desktop CPUs: Intel Core i9 9900K with 8 cores 3.6GHz and Intel Core i9 7900X with 10 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 9900K 's Advantages

Released 1 years and 5 months late

Integrated graphics card

Higher base frequency (3.6GHz vs 3.3GHz)

Larger L3 cache size (16MB vs 14MB)

Lower TDP (95W vs 140W)

Intel Core i9 7900X 's Advantages

Larger memory bandwidth (79.47GB/s vs 41.6GB/s)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 9900K +11%

1338

Intel Core i9 7900X

1203

Cinebench R23 Multi Core

Intel Core i9 9900K +5%

12500

Intel Core i9 7900X

11804

Geekbench 6 Single Core

Intel Core i9 9900K +25%

1665

Intel Core i9 7900X

1323

Geekbench 6 Multi Core

Intel Core i9 9900K

6395

Intel Core i9 7900X +33%

8536

Geekbench 5 Single Core

Intel Core i9 9900K +12%

1265

Intel Core i9 7900X

1127

Geekbench 5 Multi Core

Intel Core i9 9900K

8406

Intel Core i9 7900X +21%

10189

Passmark CPU Single Core

Intel Core i9 9900K +15%

2945

Intel Core i9 7900X

2556

Passmark CPU Multi Core

Intel Core i9 9900K

18381

Intel Core i9 7900X +14%

20991

Intel Core i9 9900K

VS

Intel Core i9 7900X

General Parameters

Oct 2018

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Coffee Lake

Core Architecture

Skylake

i9-9900K

Processor Number

i9-7900X

LGA-1151

Socket

LGA-2066

UHD Graphics 630

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-2066

95 W

Power Consumption

140 W

100 °C

Peak Operating Temperature

95 °C

CPU Performance

8

Performance Cores

10

16

Performance Core Threads

20

3.6 GHz

Performance Core Base Frequency

3.3 GHz

5 GHz

Performance Core Turbo Frequency

4.3 GHz

8

Total Core Count

10

16

Total Thread Count

20

100 MHz

Bus Frequency

100 MHz

36x

Multiplier

33x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

16 MB shared

L3 Cache

14 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

41.6 GB/s

Max Memory Bandwidth

79.47 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

-

350 MHz

GPU Base Frequency

-

1200 MHz

GPU Max Dynamic Frequency

-

192

Shader Units

-

24

Texture Units

-

3

Raster Operation Units

-

24

Execution Units

-

15 W

Power Consumption

-

4096x2304 - 60 Hz

Max Resolution

-

0.38 TFLOPS

Graphics Performance

-

Miscellaneous

Intel Core i9 9900K

Official Website

Intel Core i9 7900X

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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