Intel Core i9 7900X vs Intel Core i9 9940X

VS

Intel Core i9 7900X

Intel Core i9 9940X

We compared two desktop CPUs: Intel Core i9 7900X with 10 cores 3.3GHz and Intel Core i9 9940X with 14 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 7900X 's Advantages

Lower TDP (140W vs 165W)

Intel Core i9 9940X 's Advantages

Released 1 years and 5 months late

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

Larger L3 cache size (20MB vs 14MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 7900X

1203

Intel Core i9 9940X +2%

1228

Cinebench R23 Multi Core

Intel Core i9 7900X

14998

Intel Core i9 9940X +2%

15351

Geekbench 6 Single Core

Intel Core i9 7900X

1323

Intel Core i9 9940X

1328

Geekbench 6 Multi Core

Intel Core i9 7900X

8536

Intel Core i9 9940X +14%

9787

Geekbench 5 Single Core

Intel Core i9 7900X

1127

Intel Core i9 9940X +5%

1189

Geekbench 5 Multi Core

Intel Core i9 7900X

10189

Intel Core i9 9940X +41%

14374

Passmark CPU Single Core

Intel Core i9 7900X

2556

Intel Core i9 9940X +2%

2608

Passmark CPU Multi Core

Intel Core i9 7900X

20991

Intel Core i9 9940X +35%

28355

Intel Core i9 7900X

VS

Intel Core i9 9940X

General Parameters

May 2017

Release Date

Oct 2018

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Skylake

i9-7900X

Processor Number

i9-9940X

LGA-2066

Socket

LGA-2066

N/A

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

140 W

Power Consumption

165 W

95 °C

Peak Operating Temperature

88 °C

CPU Performance

10

Performance Cores

14

20

Performance Core Threads

28

3.3 GHz

Performance Core Base Frequency

3.3 GHz

4.3 GHz

Performance Core Turbo Frequency

4.4 GHz

10

Total Core Count

14

20

Total Thread Count

28

100 MHz

Bus Frequency

100 MHz

33x

Multiplier

33x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

1 MB per core

14 MB shared

L3 Cache

20 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

79.47 GB/s

Max Memory Bandwidth

85 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i9 7900X

Official Website

Intel Core i9 9940X

3.0

PCIe Version

3.0

44

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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