Intel Core i9 12900K vs AMD Ryzen 7 3800X

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We compared two desktop CPUs: Intel Core i9 12900K with 16 cores 32GHz and AMD Ryzen 7 3800X with 8 cores 3.9GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 12900K 's Advantages

Released 2 years and 3 months late

Integrated graphics card

Higher specification of memory (DDR5-4800 vs DDR4-3200)

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

Newer PCIe version (5.0 vs 4.0)

Higher base frequency (32GHz vs 3.9GHz)

AMD Ryzen 7 3800X 's Advantages

Larger L3 cache size (32MB vs 30MB)

Lower TDP (105W vs 125W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 12900K +51%

2028

AMD Ryzen 7 3800X

1341

Cinebench R23 Multi Core

Intel Core i9 12900K +97%

27422

AMD Ryzen 7 3800X

13863

Geekbench 6 Single Core

Intel Core i9 12900K +50%

2631

AMD Ryzen 7 3800X

1743

Geekbench 6 Multi Core

Intel Core i9 12900K +97%

17004

AMD Ryzen 7 3800X

8625

Cinebench 2024 Single Core

Intel Core i9 12900K +57%

123

AMD Ryzen 7 3800X

78

Cinebench 2024 Multi Core

Intel Core i9 12900K +122%

1582

AMD Ryzen 7 3800X

712

Geekbench 5 Single Core

Intel Core i9 12900K +47%

1970

AMD Ryzen 7 3800X

1333

Geekbench 5 Multi Core

Intel Core i9 12900K +79%

17028

AMD Ryzen 7 3800X

9479

Passmark CPU Single Core

Intel Core i9 12900K +54%

4173

AMD Ryzen 7 3800X

2695

Passmark CPU Multi Core

Intel Core i9 12900K +76%

41390

AMD Ryzen 7 3800X

23418

Intel Core i9 12900K

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AMD Ryzen 7 3800X

General Parameters

Oct 2021

Release Date

Jul 2019

Intel

Manufacturer

Amd

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Alder Lake

Core Architecture

Zen 2

i9-12900K

Processor Number

-

LGA-1700

Socket

AM4

UHD Graphics 770

Integrated Graphics

No

Package

-

Transistor Count

3.8 billions

10 nm

Manufacturing Process

7 nm

LGA-1700

Socket

AM4

125 W

Power Consumption

105 W

100°C

Peak Operating Temperature

95°C

CPU Performance

8

Performance Cores

8

16

Performance Core Threads

16

3,2 GHz

Performance Core Base Frequency

3.9 GHz

5.1 GHz

Performance Core Turbo Frequency

4.5 GHz

8

Efficiency Cores

-

8

Efficiency Core Threads

-

2.4 GHz

Efficiency Core Base Frequency

-

3.9 GHz

Efficiency Core Turbo Frequency

-

16

Total Core Count

8

24

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

32x

Multiplier

39x

64 K per core

L1 Cache

64 K per core

14 MB shared

L2 Cache

512 K per core

30 MB shared

L3 Cache

32 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR5-4800, DDR4-3200

Memory Types

DDR4-3200

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

76.8 GB/s

Max Memory Bandwidth

47.68 GB/s

Yes

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

-

300 MHz

GPU Base Frequency

-

1550 MHz

GPU Max Dynamic Frequency

-

256

Shader Units

-

16

Texture Units

-

8

Raster Operation Units

-

32

Execution Units

-

15 W

Power Consumption

-

0.78 TFLOPS

Graphics Performance

-

Miscellaneous

Intel Core i9 12900K

Official Website

AMD Ryzen 7 3800X

5.0

PCIe Version

4.0

20

PCIe Lanes

16

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