Intel Core i9 9900X vs Intel Core i7 7800X

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We compared two desktop CPUs: Intel Core i9 9900X with 10 cores 3.5GHz and Intel Core i7 7800X with 6 cores 3.5GHz . 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

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

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

Larger L3 cache size (20MB vs 8MB)

Intel Core i7 7800X 's Advantages

Lower TDP (140W vs 165W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 9900X +22%

1178

Intel Core i7 7800X

963

Cinebench R23 Multi Core

Intel Core i9 9900X +91%

13952

Intel Core i7 7800X

7269

Geekbench 6 Single Core

Intel Core i9 9900X +6%

1455

Intel Core i7 7800X

1362

Geekbench 6 Multi Core

Intel Core i9 9900X +68%

10273

Intel Core i7 7800X

6082

Geekbench 5 Single Core

Intel Core i9 9900X +8%

1165

Intel Core i7 7800X

1069

Geekbench 5 Multi Core

Intel Core i9 9900X +62%

10704

Intel Core i7 7800X

6578

Passmark CPU Single Core

Intel Core i9 9900X +6%

2565

Intel Core i7 7800X

2409

Passmark CPU Multi Core

Intel Core i9 9900X +69%

21833

Intel Core i7 7800X

12894

Intel Core i9 9900X

VS

Intel Core i7 7800X

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

i7-7800X

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

100 °C

CPU Performance

10

Performance Cores

6

20

Performance Core Threads

12

3.5 GHz

Performance Core Base Frequency

3.5 GHz

4.4 GHz

Performance Core Turbo Frequency

4 GHz

10

Total Core Count

6

20

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

35x

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

8 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-2400

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 7800X

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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