AMD Ryzen 9 3900X vs AMD Ryzen 9 7900

VS

AMD Ryzen 9 3900X AMD Ryzen 9 7900

We compared two desktop CPUs: AMD Ryzen 9 3900X with 12 cores 3.8GHz and AMD Ryzen 9 7900 with 12 cores 3.7GHz . 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

Higher base frequency (3.8GHz vs 3.7GHz)

AMD Ryzen 9 7900 's Advantages

Released 3 years and 6 months late

Integrated graphics card

Higher specification of memory (DDR5-5200 vs DDR4-3200)

Larger memory bandwidth (83.2GB/s vs 47.68GB/s)

Newer PCIe version (5.0 vs 4.0)

Lower TDP (65W vs 105W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 3900X

1313

AMD Ryzen 9 7900 +54%

2034

Cinebench R23 Multi Core

AMD Ryzen 9 3900X

18656

AMD Ryzen 9 7900 +57%

29358

Geekbench 6 Single Core

AMD Ryzen 9 3900X

1842

AMD Ryzen 9 7900 +60%

2954

Geekbench 6 Multi Core

AMD Ryzen 9 3900X

11715

AMD Ryzen 9 7900 +50%

17582

Cinebench 2024 Single Core

AMD Ryzen 9 3900X

78

AMD Ryzen 9 7900 +52%

119

Cinebench 2024 Multi Core

AMD Ryzen 9 3900X

1068

AMD Ryzen 9 7900 +52%

1632

Geekbench 5 Single Core

AMD Ryzen 9 3900X

1319

AMD Ryzen 9 7900 +62%

2148

Geekbench 5 Multi Core

AMD Ryzen 9 3900X

11991

AMD Ryzen 9 7900 +49%

17950

Passmark CPU Single Core

AMD Ryzen 9 3900X

2683

AMD Ryzen 9 7900 +54%

4157

Passmark CPU Multi Core

AMD Ryzen 9 3900X

32531

AMD Ryzen 9 7900 +50%

48850

AMD Ryzen 9 3900X

VS

AMD Ryzen 9 7900

General Parameters

Jul 2019

Release Date

Jan 2023

AMD

Manufacturer

Amd

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Zen 2

Core Architecture

Zen 4 (Raphael)

AM4

Socket

AM5

N/A

Integrated Graphics

Radeon Graphics (Ryzen 7000)

Package

3.8 billions

Transistor Count

13.1 billions

7 nm

Manufacturing Process

5 nm

AM4

Socket

AM5

105 W

Power Consumption

65 W

-

Max Turbo Power Consumption

142 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

3.7 GHz

4.6 GHz

Performance Core Turbo Frequency

5.4 GHz

12

Total Core Count

12

24

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

38x

Multiplier

37x

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

64 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-3200

Memory Types

DDR5-5200

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

47.68 GB/s

Max Memory Bandwidth

83.2 GB/s

Yes

ECC Memory Support

Yes

Graphics Card Parameters

-

Integrated Graphics

true

-

GPU Base Frequency

1500 MHz

-

GPU Max Dynamic Frequency

2200 MHz

-

Shader Units

448

-

Texture Units

8

-

Raster Operation Units

4

-

Execution Units

2

-

Power Consumption

15 W

-

Graphics Performance

1.43 TFLOPS

Miscellaneous

AMD Ryzen 9 3900X

Official Website

AMD Ryzen 9 7900

4.0

PCIe Version

5.0

16

PCIe Lanes

28

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