Intel Core i9 9900X vs Intel Core i7 7820X

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We compared two desktop CPUs: Intel Core i9 9900X with 10 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 i9 9900X 's Advantages

Released 1 years and 5 months late

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

Larger L3 cache size (20MB vs 11MB)

Intel Core i7 7820X 's Advantages

Higher base frequency (3.6GHz vs 3.5GHz)

Lower TDP (140W vs 165W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 9900X

1178

Intel Core i7 7820X +13%

1338

Cinebench R23 Multi Core

Intel Core i9 9900X +4%

13952

Intel Core i7 7820X

13358

Geekbench 6 Single Core

Intel Core i9 9900X +16%

1455

Intel Core i7 7820X

1252

Geekbench 6 Multi Core

Intel Core i9 9900X +36%

10273

Intel Core i7 7820X

7510

Geekbench 5 Single Core

Intel Core i9 9900X +4%

1165

Intel Core i7 7820X

1120

Geekbench 5 Multi Core

Intel Core i9 9900X +25%

10704

Intel Core i7 7820X

8504

Passmark CPU Single Core

Intel Core i9 9900X +1%

2565

Intel Core i7 7820X

2536

Passmark CPU Multi Core

Intel Core i9 9900X +27%

21833

Intel Core i7 7820X

17189

Intel Core i9 9900X

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Intel Core i7 7820X

General Parameters

Oct 2018

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Skylake

i9-9900X

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

165 W

Power Consumption

140 W

92 °C

Peak Operating Temperature

99 °C

CPU Performance

10

Performance Cores

8

20

Performance Core Threads

16

3.5 GHz

Performance Core Base Frequency

3.6 GHz

4.4 GHz

Performance Core Turbo Frequency

4.3 GHz

10

Total Core Count

8

20

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

20 MB shared

L3 Cache

11 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

4

85 GB/s

Max Memory Bandwidth

79.47 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i9 9900X

Official Website

Intel Core i7 7820X

3.0

PCIe Version

3.0

44

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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