AMD Ryzen 9 3900X vs Intel Core i7 7740X

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We compared two desktop CPUs: AMD Ryzen 9 3900X with 12 cores 3.8GHz 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

AMD Ryzen 9 3900X 's Advantages

Released 2 years and 2 months late

Higher specification of memory (DDR4-3200 vs DDR4-2666)

Larger memory bandwidth (47.68GB/s vs 42.7GB/s)

Newer PCIe version (4.0 vs 3.0)

Larger L3 cache size (64MB vs 8MB)

Lower TDP (105W vs 112W)

Intel Core i7 7740X 's Advantages

Higher base frequency (4.3GHz vs 3.8GHz)

Score

Benchmark

Geekbench 6 Single Core

AMD Ryzen 9 3900X +18%

1842

Intel Core i7 7740X

1553

Geekbench 6 Multi Core

AMD Ryzen 9 3900X +112%

11715

Intel Core i7 7740X

5516

Geekbench 5 Single Core

AMD Ryzen 9 3900X +2%

1319

Intel Core i7 7740X

1291

Geekbench 5 Multi Core

AMD Ryzen 9 3900X +139%

11991

Intel Core i7 7740X

5001

Passmark CPU Single Core

AMD Ryzen 9 3900X

2683

Intel Core i7 7740X +2%

2759

Passmark CPU Multi Core

AMD Ryzen 9 3900X +231%

32531

Intel Core i7 7740X

9824

AMD Ryzen 9 3900X

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Intel Core i7 7740X

General Parameters

Jul 2019

Release Date

May 2017

AMD

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Zen 2

Core Architecture

Kaby Lake

-

Processor Number

i7-7740X

AM4

Socket

LGA-2066

N/A

Integrated Graphics

N/A

Package

3.8 billions

Transistor Count

-

7 nm

Manufacturing Process

14 nm

AM4

Socket

LGA-2066

105 W

Power Consumption

112 W

95 °C

Peak Operating Temperature

100 °C

CPU Performance

12

Performance Cores

4

24

Performance Core Threads

8

3.8 GHz

Performance Core Base Frequency

4.3 GHz

4.6 GHz

Performance Core Turbo Frequency

4.5 GHz

12

Total Core Count

4

24

Total Thread Count

8

100 MHz

Bus Frequency

-

38x

Multiplier

43x

64 K per core

L1 Cache

64 K per core

512 K per core

L2 Cache

256 K per core

64 MB shared

L3 Cache

8 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-3200

Memory Types

DDR4-2666

128 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

47.68 GB/s

Max Memory Bandwidth

42.7 GB/s

Yes

ECC Memory Support

No

Miscellaneous

AMD Ryzen 9 3900X

Official Website

Intel Core i7 7740X

4.0

PCIe Version

3.0

16

PCIe Lanes

16

-

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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