Intel Core i7 7800X vs Intel Core i7 7820X

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We compared two desktop CPUs: Intel Core i7 7800X with 6 cores 3.5GHz and Intel Core i7 7820X with 8 cores 3.6GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i7 7820X 's Advantages

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

Higher base frequency (3.6GHz vs 3.5GHz)

Larger L3 cache size (11MB vs 8MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 7800X

963

Intel Core i7 7820X +38%

1338

Cinebench R23 Multi Core

Intel Core i7 7800X

7269

Intel Core i7 7820X +83%

13358

Geekbench 6 Single Core

Intel Core i7 7800X +8%

1362

Intel Core i7 7820X

1252

Geekbench 6 Multi Core

Intel Core i7 7800X

6082

Intel Core i7 7820X +23%

7510

Geekbench 5 Single Core

Intel Core i7 7800X

1069

Intel Core i7 7820X +4%

1120

Geekbench 5 Multi Core

Intel Core i7 7800X

6578

Intel Core i7 7820X +29%

8504

Passmark CPU Single Core

Intel Core i7 7800X

2409

Intel Core i7 7820X +5%

2536

Passmark CPU Multi Core

Intel Core i7 7800X

12894

Intel Core i7 7820X +33%

17189

Intel Core i7 7800X

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Intel Core i7 7820X

General Parameters

May 2017

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Skylake

i7-7800X

Processor Number

i7-7820X

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

99 °C

CPU Performance

6

Performance Cores

8

12

Performance Core Threads

16

3.5 GHz

Performance Core Base Frequency

3.6 GHz

4 GHz

Performance Core Turbo Frequency

4.3 GHz

6

Total Core Count

8

12

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

36x

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

11 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

79.47 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i7 7800X

Official Website

Intel Core i7 7820X

3.0

PCIe Version

3.0

28

PCIe Lanes

28

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

Extended Instruction Set

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

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