Intel Core i9 12900 vs Intel Core i7 7820X

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We compared two desktop CPUs: Intel Core i9 12900 with 16 cores 2.4GHz and Intel Core i7 7820X with 8 cores 3.6GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i9 12900 's Advantages

Released 4 years and 8 months late

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

Newer PCIe version (5 vs 3.0)

Larger L3 cache size (30MB vs 11MB)

More modern manufacturing process (10nm vs 14nm)

Lower TDP (65W vs 140W)

Intel Core i7 7820X 's Advantages

Larger memory bandwidth (79.47GB/s vs 76.8GB/s)

Higher base frequency (3.6GHz vs 2.4GHz)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i9 12900 +48%

1988

Intel Core i7 7820X

1338

Cinebench R23 Multi Core

Intel Core i9 12900 +98%

26454

Intel Core i7 7820X

13358

Geekbench 6 Single Core

Intel Core i9 12900 +117%

2727

Intel Core i7 7820X

1252

Geekbench 6 Multi Core

Intel Core i9 12900 +78%

13396

Intel Core i7 7820X

7510

Intel Core i9 12900

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Intel Core i7 7820X

General Parameters

Jan 2022

Release Date

May 2017

Intel

Manufacturer

Intel

Desktop

Type

Desktop

-

Instruction Set

x86-64

Alder Lake-S

Core Architecture

Skylake

-

Processor Number

i7-7820X

Intel Socket 1700

Socket

LGA-2066

UHD Graphics 770

Integrated Graphics

N/A

Core i9 (Alder Lake-S)

Generation

-

Package

10 nm

Manufacturing Process

14 nm

Intel Socket 1700

Socket

LGA-2066

65 W

Power Consumption

140 W

72 °C

Peak Operating Temperature

99 °C

Intel

Foundry

-

215 mm²

Die Size

-

FC-LGA16A

Package

-

CPU Performance

8

Performance Cores

8

16

Performance Core Threads

16

2.4 GHz

Performance Core Base Frequency

3.6 GHz

5.1 GHz

Performance Core Turbo Frequency

4.3 GHz

8

Efficiency Cores

-

8

Efficiency Core Threads

-

1800 MHz

Efficiency Core Base Frequency

-

3.8 GHz

Efficiency Core Turbo Frequency

-

16

Total Core Count

8

24

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

24.0

Multiplier

36x

80 KB per core

L1 Cache

64 K per core

1.25 MB per core

L2 Cache

1 MB per core

30 MB shared

L3 Cache

11 MB shared

Yes

Unlocked Multiplier

Yes

1

SMP

-

Memory Parameters

DDR4-3200, DDR5-4800

Memory Types

DDR4-2666

-

Max Memory Size

128 GB

2

Max Memory Channels

4

76.8 GB/s

Max Memory Bandwidth

79.47 GB/s

No

ECC Memory Support

No

Miscellaneous

-

Official Website

Intel Core i7 7820X

5

PCIe Version

3.0

20

PCIe Lanes

28

-

Extended Instruction Set

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

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