AMD Ryzen 9 3900X vs Intel Core i9 7920X

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We compared two desktop CPUs: AMD Ryzen 9 3900X with 12 cores 3.8GHz and Intel Core i9 7920X with 12 cores 2.9GHz . 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 1 years and 11 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 2.9GHz)

Larger L3 cache size (64MB vs 17MB)

Lower TDP (105W vs 140W)

Intel Core i9 7920X 's Advantages

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

Score

Benchmark

Geekbench 6 Single Core

AMD Ryzen 9 3900X +74%

1842

Intel Core i9 7920X

1053

Geekbench 6 Multi Core

AMD Ryzen 9 3900X +170%

11715

Intel Core i9 7920X

4327

Geekbench 5 Single Core

AMD Ryzen 9 3900X +16%

1319

Intel Core i9 7920X

1137

Geekbench 5 Multi Core

AMD Ryzen 9 3900X +1%

11991

Intel Core i9 7920X

11828

Passmark CPU Single Core

AMD Ryzen 9 3900X +7%

2683

Intel Core i9 7920X

2488

Passmark CPU Multi Core

AMD Ryzen 9 3900X +38%

32531

Intel Core i9 7920X

23468

AMD Ryzen 9 3900X

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Intel Core i9 7920X

General Parameters

Jul 2019

Release Date

Aug 2017

AMD

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Zen 2

Core Architecture

Skylake

-

Processor Number

i9-7920X

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

140 W

95 °C

Peak Operating Temperature

95 °C

CPU Performance

12

Performance Cores

12

24

Performance Core Threads

24

3.8 GHz

Performance Core Base Frequency

2.9 GHz

4.6 GHz

Performance Core Turbo Frequency

4.3 GHz

12

Total Core Count

12

24

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

38x

Multiplier

29x

64 K per core

L1 Cache

64 K per core

512 K per core

L2 Cache

1 MB per core

64 MB shared

L3 Cache

17 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-3200

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

47.68 GB/s

Max Memory Bandwidth

85 GB/s

Yes

ECC Memory Support

No

Miscellaneous

AMD Ryzen 9 3900X

Official Website

Intel Core i9 7920X

4.0

PCIe Version

3.0

16

PCIe Lanes

44

-

Extended Instruction Set

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

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