AMD Ryzen 9 3900X vs Intel Core i9 12900K

VS

AMD Ryzen 9 3900X

Intel Core i9 12900K

We compared two desktop CPUs: AMD Ryzen 9 3900X with 12 cores 3.8GHz and Intel Core i9 12900K with 16 cores 32GHz . 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

Larger L3 cache size (64MB vs 30MB)

More modern manufacturing process (7nm vs 10nm)

Lower TDP (105W vs 125W)

Intel Core i9 12900K 's Advantages

Released 2 years and 3 months late

Integrated graphics card

Higher specification of memory (4800 vs 3200)

Larger memory bandwidth (76.8GB/s vs 47.68GB/s)

Newer PCIe version (5.0 vs 4.0)

Higher base frequency (32GHz vs 3.8GHz)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 3900X

1306

Intel Core i9 12900K +55%

2028

Cinebench R23 Multi Core

AMD Ryzen 9 3900X

18454

Intel Core i9 12900K +48%

27422

Geekbench 6 Single Core

AMD Ryzen 9 3900X

1842

Intel Core i9 12900K +42%

2631

Geekbench 6 Multi Core

AMD Ryzen 9 3900X

11715

Intel Core i9 12900K +45%

17004

Cinebench 2024 Single Core

AMD Ryzen 9 3900X

78

Intel Core i9 12900K +60%

125

Cinebench 2024 Multi Core

AMD Ryzen 9 3900X

1068

Intel Core i9 12900K +47%

1574

Geekbench 5 Single Core

AMD Ryzen 9 3900X

1319

Intel Core i9 12900K +49%

1970

Geekbench 5 Multi Core

AMD Ryzen 9 3900X

11991

Intel Core i9 12900K +42%

17028

Passmark CPU Single Core

AMD Ryzen 9 3900X

2683

Intel Core i9 12900K +55%

4173

Passmark CPU Multi Core

AMD Ryzen 9 3900X

32531

Intel Core i9 12900K +27%

41390

AMD Ryzen 9 3900X

VS

Intel Core i9 12900K

General Parameters

Jul 2019

Release Date

Oct 2021

AMD

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Zen 2

Core Architecture

Alder Lake

-

Processor Number

i9-12900K

AM4

Socket

LGA-1700

N/A

Integrated Graphics

UHD Graphics 770

Package

3.8 billions

Transistor Count

-

7 nm

Manufacturing Process

10 nm

105 W

Power Consumption

125 W

95 °C

Peak Operating Temperature

100°C

CPU Performance

12

Performance Cores

8

24

Performance Core Threads

16

3.8 GHz

Performance Core Base Frequency

3,2 GHz

4.6 GHz

Performance Core Turbo Frequency

5.1 GHz

-

Efficiency Cores

8

-

Efficiency Core Threads

8

-

Efficiency Core Base Frequency

2.4 GHz

-

Efficiency Core Turbo Frequency

3.9 GHz

12

Total Core Count

16

24

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

38x

Multiplier

32x

64 K per core

L1 Cache

64 K per core

512 K per core

L2 Cache

14 MB shared

64 MB shared

L3 Cache

30 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR4-3200

Memory Types

DDR5-4800, DDR4-3200

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

47.68 GB/s

Max Memory Bandwidth

76.8 GB/s

Yes

ECC Memory Support

Yes

Graphics Card Parameters

-

Integrated Graphics

true

-

GPU Base Frequency

300 MHz

-

GPU Max Dynamic Frequency

1550 MHz

-

Shader Units

256

-

Texture Units

16

-

Raster Operation Units

8

-

Execution Units

32

-

Power Consumption

15 W

-

Graphics Performance

0.78 TFLOPS

Miscellaneous

AMD Ryzen 9 3900X

Official Website

Intel Core i9 12900K

4.0

PCIe Version

5.0

16

PCIe Lanes

20

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