Intel Core i7 7700K vs Intel Core i9 7900X

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We compared two desktop CPUs: Intel Core i7 7700K with 4 cores 4.2GHz 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 i7 7700K 's Advantages

Integrated graphics card

Higher base frequency (4.2GHz vs 3.3GHz)

Lower TDP (91W vs 140W)

Intel Core i9 7900X 's Advantages

Higher specification of memory (DDR4-2666 vs DDR4-2400)

Larger memory bandwidth (79.47GB/s vs 35.76GB/s)

Larger L3 cache size (14MB vs 8MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 7700K

1215

Intel Core i9 7900X

1203

Cinebench R23 Multi Core

Intel Core i7 7700K

5904

Intel Core i9 7900X +99%

11804

Geekbench 6 Single Core

Intel Core i7 7700K +17%

1557

Intel Core i9 7900X

1323

Geekbench 6 Multi Core

Intel Core i7 7700K

5260

Intel Core i9 7900X +62%

8536

Geekbench 5 Single Core

Intel Core i7 7700K

1129

Intel Core i9 7900X

1127

Geekbench 5 Multi Core

Intel Core i7 7700K

4705

Intel Core i9 7900X +116%

10189

Passmark CPU Single Core

Intel Core i7 7700K +6%

2712

Intel Core i9 7900X

2556

Passmark CPU Multi Core

Intel Core i7 7700K

9594

Intel Core i9 7900X +118%

20991

Intel Core i7 7700K

VS

Intel Core i9 7900X

General Parameters

Jan 2017

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Kaby Lake

Core Architecture

Skylake

i7-7700K

Processor Number

i9-7900X

LGA-1151

Socket

LGA-2066

HD Graphics 630

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-2066

91 W

Power Consumption

140 W

100 °C

Peak Operating Temperature

95 °C

CPU Performance

4

Performance Cores

10

8

Performance Core Threads

20

4.2 GHz

Performance Core Base Frequency

3.3 GHz

4.5 GHz

Performance Core Turbo Frequency

4.3 GHz

4

Total Core Count

10

8

Total Thread Count

20

42 MHz

Bus Frequency

100 MHz

100x

Multiplier

33x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

8 MB shared

L3 Cache

14 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2400, DDR3L-1600

Memory Types

DDR4-2666

64 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

35.76 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

-

1150 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

-

0.44 TFLOPS

Graphics Performance

-

Miscellaneous

Intel Core i7 7700K

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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