Intel Core i9 12900KS vs Intel Core i9 9940X

VS

Intel Core i9 12900KS Intel Core i9 9940X

We compared two desktop CPUs: Intel Core i9 12900KS with 16 cores 3.4GHz and Intel Core i9 9940X with 14 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 12900KS 's Advantages

Released 3 years and 6 months late

Integrated graphics card

Higher specification of memory (DDR5-4800 vs DDR4-2666)

Newer PCIe version (5.0 vs 3.0)

Higher base frequency (3.4GHz vs 3.3GHz)

Larger L3 cache size (30MB vs 20MB)

More modern manufacturing process (10nm vs 14nm)

Lower TDP (150W vs 165W)

Intel Core i9 9940X 's Advantages

Larger memory bandwidth (85GB/s vs 76.8GB/s)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 12900KS +69%

2082

Intel Core i9 9940X

1228

Cinebench R23 Multi Core

Intel Core i9 12900KS +81%

27796

Intel Core i9 9940X

15351

Geekbench 6 Single Core

Intel Core i9 12900KS +92%

2559

Intel Core i9 9940X

1328

Geekbench 6 Multi Core

Intel Core i9 12900KS +58%

15546

Intel Core i9 9940X

9787

Geekbench 5 Single Core

Intel Core i9 12900KS +71%

2041

Intel Core i9 9940X

1189

Geekbench 5 Multi Core

Intel Core i9 12900KS +23%

17685

Intel Core i9 9940X

14374

Passmark CPU Single Core

Intel Core i9 12900KS +67%

4357

Intel Core i9 9940X

2608

Passmark CPU Multi Core

Intel Core i9 12900KS +56%

44470

Intel Core i9 9940X

28355

Intel Core i9 12900KS

VS

Intel Core i9 9940X

General Parameters

Apr 2022

Release Date

Oct 2018

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Alder Lake-S

Core Architecture

Skylake

i9-12900KS

Processor Number

i9-9940X

LGA-1700

Socket

LGA-2066

UHD Graphics 770

Integrated Graphics

N/A

Package

10 nm

Manufacturing Process

14 nm

LGA-1700

Socket

LGA-2066

150 W

Power Consumption

165 W

100 °C

Peak Operating Temperature

88 °C

CPU Performance

8

Performance Cores

14

-

Performance Core Threads

28

3.4 GHz

Performance Core Base Frequency

3.3 GHz

5.5 GHz

Performance Core Turbo Frequency

4.4 GHz

8

Efficiency Cores

-

16

Total Core Count

14

24

Total Thread Count

28

100 MHz

Bus Frequency

100 MHz

34x

Multiplier

33x

64 K per core

L1 Cache

64 K per core

14 MB shared

L2 Cache

1 MB per core

30 MB shared

L3 Cache

20 MB shared

Yes

Unlocked Multiplier

Yes

Memory Parameters

DDR5-4800, DDR4-3200

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

76.8 GB/s

Max Memory Bandwidth

85 GB/s

Yes

ECC Memory Support

No

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 12900KS

Official Website

Intel Core i9 9940X

5.0

PCIe Version

3.0

20

PCIe Lanes

44

-

Extended Instruction Set

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

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