AMD Ryzen 9 9900X vs AMD Ryzen 9 3900XT

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We compared two desktop CPUs: AMD Ryzen 9 9900X with 12 cores 4.4GHz and AMD Ryzen 9 3900XT with 12 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 9 9900X 's Advantages

Released 3 years and 11 months late

Integrated graphics card

Higher specification of memory (DDR5-5600 vs DDR4-3200)

Larger memory bandwidth (89.6GB/s vs 47.68GB/s)

Newer PCIe version (5.0 vs 4.0)

Higher base frequency (4.4GHz vs 3.8GHz)

More modern manufacturing process (4nm vs 7nm)

AMD Ryzen 9 3900XT 's Advantages

Lower TDP (105W vs 120W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 9900X +71%

2323

AMD Ryzen 9 3900XT

1352

Cinebench R23 Multi Core

AMD Ryzen 9 9900X +122%

40986

AMD Ryzen 9 3900XT

18436

Geekbench 6 Single Core

AMD Ryzen 9 9900X +86%

3284

AMD Ryzen 9 3900XT

1763

Geekbench 6 Multi Core

AMD Ryzen 9 9900X +117%

23982

AMD Ryzen 9 3900XT

11025

AMD Ryzen 9 9900X

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AMD Ryzen 9 3900XT

General Parameters

Jun 2024

Release Date

Jul 2020

Amd

Manufacturer

Amd

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Zen 5 (Granite Ridge)

Core Architecture

Zen 2 (Matisse)

AM5

Socket

AM4

Radeon Graphics

Integrated Graphics

No

Ryzen 9 (Zen 5 (Granite Ridge))

Generation

-

Package

-

Transistor Count

3.8 billions

4 nm

Manufacturing Process

7 nm

AM5

Socket

AM4

120 W

Power Consumption

105 W

95°C

Peak Operating Temperature

95°C

TSMC

Foundry

-

6 nm

I/O Process Size

-

FC-LGA1718

Package

-

CPU Performance

12

Performance Cores

12

24

Performance Core Threads

24

4.4 GHz

Performance Core Base Frequency

3.8 GHz

5.6 GHz

Performance Core Turbo Frequency

4.7 GHz

12

Total Core Count

12

24

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

44x

Multiplier

38x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

512 K per core

64 MB shared

L3 Cache

64 MB shared

Yes

Unlocked Multiplier

Yes

1

SMP

-

Memory Parameters

DDR5-5600

Memory Types

DDR4-3200

192 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

89.6 GB/s

Max Memory Bandwidth

47.68 GB/s

Yes

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

-

MHz

GPU Base Frequency

-

2200 MHz

GPU Max Dynamic Frequency

-

2

Execution Units

-

Miscellaneous

AMD Ryzen 9 9900X

Official Website

AMD Ryzen 9 3900XT

5.0

PCIe Version

4.0

28

PCIe Lanes

24

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