Intel Core i5 6400 vs AMD Ryzen 9 7900

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We compared two desktop CPUs: Intel Core i5 6400 with 4 cores 2.7GHz and AMD Ryzen 9 7900 with 12 cores 3.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 9 7900 's Advantages

Released 7 years and 4 months late

Higher specification of memory (DDR5-5200 vs DDR4-2133)

Larger memory bandwidth (83.2GB/s vs 34.1GB/s)

Newer PCIe version (5.0 vs 3.0)

Higher base frequency (3.7GHz vs 2.7GHz)

Larger L3 cache size (64MB vs 6MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 6400

898

AMD Ryzen 9 7900 +126%

2034

Cinebench R23 Multi Core

Intel Core i5 6400

3214

AMD Ryzen 9 7900 +813%

29358

Geekbench 6 Single Core

Intel Core i5 6400

1143

AMD Ryzen 9 7900 +158%

2954

Geekbench 6 Multi Core

Intel Core i5 6400

3312

AMD Ryzen 9 7900 +430%

17582

Blender

Intel Core i5 6400

41

AMD Ryzen 9 7900 +1109%

496

Geekbench 5 Single Core

Intel Core i5 6400

853

AMD Ryzen 9 7900 +151%

2148

Geekbench 5 Multi Core

Intel Core i5 6400

2805

AMD Ryzen 9 7900 +539%

17950

Passmark CPU Single Core

Intel Core i5 6400

1961

AMD Ryzen 9 7900 +111%

4157

Passmark CPU Multi Core

Intel Core i5 6400

5151

AMD Ryzen 9 7900 +848%

48850

Intel Core i5 6400

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AMD Ryzen 9 7900

General Parameters

Sep 2015

Release Date

Jan 2023

Intel

Manufacturer

Amd

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Zen 4 (Raphael)

i5-6400

Processor Number

-

LGA-1151

Socket

AM5

HD Graphics 530

Integrated Graphics

Radeon Graphics (Ryzen 7000)

Package

-

Transistor Count

13.1 billions

14 nm

Manufacturing Process

5 nm

LGA-1151

Socket

AM5

65 W

Power Consumption

65 W

-

Max Turbo Power Consumption

142 W

-

Peak Operating Temperature

95°C

CPU Performance

4

Performance Cores

12

4

Performance Core Threads

24

2.7 GHz

Performance Core Base Frequency

3.7 GHz

3.3 GHz

Performance Core Turbo Frequency

5.4 GHz

4

Total Core Count

12

4

Total Thread Count

24

100 MHz

Bus Frequency

100 MHz

27x

Multiplier

37x

64 K per core

L1 Cache

64 K per core

256 K per core

L2 Cache

1 MB per core

6 MB shared

L3 Cache

64 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133, DDR3L-1600

Memory Types

DDR5-5200

64 GB

Max Memory Size

128 GB

2

Max Memory Channels

2

34.1 GB/s

Max Memory Bandwidth

83.2 GB/s

No

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

1500 MHz

950 MHz

GPU Max Dynamic Frequency

2200 MHz

-

Shader Units

448

-

Texture Units

8

-

Raster Operation Units

4

-

Execution Units

2

-

Power Consumption

15 W

-

Graphics Performance

1.43 TFLOPS

Miscellaneous

Intel Core i5 6400

Official Website

AMD Ryzen 9 7900

3.0

PCIe Version

5.0

16

PCIe Lanes

28

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

-

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