Intel Core i9 9940X vs AMD Ryzen 9 3900X

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We compared two desktop CPUs: Intel Core i9 9940X with 14 cores 3.3GHz and AMD Ryzen 9 3900X with 12 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 9940X 's Advantages

Larger memory bandwidth (85GB/s vs 47.68GB/s)

AMD Ryzen 9 3900X 's Advantages

Released 9 months late

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

Newer PCIe version (4.0 vs 3.0)

Higher base frequency (3.8GHz vs 3.3GHz)

Larger L3 cache size (64MB vs 20MB)

Lower TDP (105W vs 165W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 9940X

1228

AMD Ryzen 9 3900X +6%

1313

Cinebench R23 Multi Core

Intel Core i9 9940X

15351

AMD Ryzen 9 3900X +21%

18656

Geekbench 6 Single Core

Intel Core i9 9940X

1328

AMD Ryzen 9 3900X +38%

1842

Geekbench 6 Multi Core

Intel Core i9 9940X

9787

AMD Ryzen 9 3900X +19%

11715

Geekbench 5 Single Core

Intel Core i9 9940X

1189

AMD Ryzen 9 3900X +10%

1319

Geekbench 5 Multi Core

Intel Core i9 9940X +19%

14374

AMD Ryzen 9 3900X

11991

Passmark CPU Single Core

Intel Core i9 9940X

2608

AMD Ryzen 9 3900X +2%

2683

Passmark CPU Multi Core

Intel Core i9 9940X

28355

AMD Ryzen 9 3900X +14%

32531

Intel Core i9 9940X

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AMD Ryzen 9 3900X

General Parameters

Oct 2018

Release Date

Jul 2019

Intel

Manufacturer

AMD

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Zen 2

i9-9940X

Processor Number

-

LGA-2066

Socket

AM4

N/A

Integrated Graphics

N/A

Package

-

Transistor Count

3.8 billions

14 nm

Manufacturing Process

7 nm

LGA-2066

Socket

AM4

165 W

Power Consumption

105 W

88 °C

Peak Operating Temperature

95 °C

CPU Performance

14

Performance Cores

12

28

Performance Core Threads

24

3.3 GHz

Performance Core Base Frequency

3.8 GHz

4.4 GHz

Performance Core Turbo Frequency

4.6 GHz

14

Total Core Count

12

28

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

33x

Multiplier

38x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

512 K per core

20 MB shared

L3 Cache

64 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2666

Memory Types

DDR4-3200

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

2

85 GB/s

Max Memory Bandwidth

47.68 GB/s

No

ECC Memory Support

Yes

Miscellaneous

Intel Core i9 9940X

Official Website

AMD Ryzen 9 3900X

3.0

PCIe Version

4.0

44

PCIe Lanes

16

SSE4.1, SSE4.2, AVX-2, AVX-512

Extended Instruction Set

-

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