Intel Core i7 7800X vs Intel Core i9 7920X

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We compared two desktop CPUs: Intel Core i7 7800X with 6 cores 3.5GHz and Intel Core i9 7920X with 12 cores 2.9GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i7 7800X 's Advantages

Higher base frequency (3.5GHz vs 2.9GHz)

Intel Core i9 7920X 's Advantages

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

Larger memory bandwidth (85GB/s vs 79.47GB/s)

Larger L3 cache size (17MB vs 8MB)

Score

Benchmark

Geekbench 6 Single Core

Intel Core i7 7800X +29%

1362

Intel Core i9 7920X

1053

Geekbench 6 Multi Core

Intel Core i7 7800X +40%

6082

Intel Core i9 7920X

4327

Geekbench 5 Single Core

Intel Core i7 7800X

1069

Intel Core i9 7920X +6%

1137

Geekbench 5 Multi Core

Intel Core i7 7800X

6578

Intel Core i9 7920X +79%

11828

Passmark CPU Single Core

Intel Core i7 7800X

2409

Intel Core i9 7920X +3%

2488

Passmark CPU Multi Core

Intel Core i7 7800X

12894

Intel Core i9 7920X +82%

23468

Intel Core i7 7800X

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Intel Core i9 7920X

General Parameters

May 2017

Release Date

Aug 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Skylake

i7-7800X

Processor Number

i9-7920X

LGA-2066

Socket

LGA-2066

N/A

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-2066

Socket

LGA-2066

140 W

Power Consumption

140 W

100 °C

Peak Operating Temperature

95 °C

CPU Performance

6

Performance Cores

12

Performance Core Threads

24

3.5 GHz

Performance Core Base Frequency

2.9 GHz

4 GHz

Performance Core Turbo Frequency

4.3 GHz

6

Total Core Count

12

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

29x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

1 MB per core

8 MB shared

L3 Cache

17 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2400

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

4

79.47 GB/s

Max Memory Bandwidth

85 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i7 7800X

Official Website

Intel Core i9 7920X

3.0

PCIe Version

3.0

28

PCIe Lanes

44

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

Extended Instruction Set

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

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