Intel Core i5 9400F vs Intel Core i7 7740X

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We compared two desktop CPUs: Intel Core i5 9400F with 6 cores 2.9GHz and Intel Core i7 7740X with 4 cores 4.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 9400F 's Advantages

Released 1 years and 8 months late

Larger L3 cache size (9MB vs 8MB)

Lower TDP (65W vs 112W)

Intel Core i7 7740X 's Advantages

Larger memory bandwidth (42.7GB/s vs 41.6GB/s)

Higher base frequency (4.3GHz vs 2.9GHz)

Score

Benchmark

Geekbench 6 Single Core

Intel Core i5 9400F

1396

Intel Core i7 7740X +11%

1553

Geekbench 6 Multi Core

Intel Core i5 9400F

5142

Intel Core i7 7740X +7%

5516

Geekbench 5 Single Core

Intel Core i5 9400F

1067

Intel Core i7 7740X +20%

1291

Geekbench 5 Multi Core

Intel Core i5 9400F

4806

Intel Core i7 7740X +4%

5001

Passmark CPU Single Core

Intel Core i5 9400F

2453

Intel Core i7 7740X +12%

2759

Passmark CPU Multi Core

Intel Core i5 9400F

9511

Intel Core i7 7740X +3%

9824

Intel Core i5 9400F

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Intel Core i7 7740X

General Parameters

Jan 2019

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Coffee Lake

Core Architecture

Kaby Lake

i5-9400F

Processor Number

i7-7740X

LGA-1151

Socket

LGA-2066

N/A

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-2066

65 W

Power Consumption

112 W

100 °C

Peak Operating Temperature

100 °C

CPU Performance

6

Performance Cores

4

6

Performance Core Threads

8

2.9 GHz

Performance Core Base Frequency

4.3 GHz

4.1 GHz

Performance Core Turbo Frequency

4.5 GHz

6

Total Core Count

4

6

Total Thread Count

8

100 MHz

Bus Frequency

-

29x

Multiplier

43x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

256 K per core

9 MB shared

L3 Cache

8 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-2666

128 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

41.6 GB/s

Max Memory Bandwidth

42.7 GB/s

No

ECC Memory Support

No

Miscellaneous

Intel Core i5 9400F

Official Website

Intel Core i7 7740X

3.0

PCIe Version

3.0

16

PCIe Lanes

16

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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