Intel Core i5 6400 vs Intel Core i9 9960X

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We compared two desktop CPUs: Intel Core i5 6400 with 4 cores 2.7GHz and Intel Core i9 9960X with 16 cores 3.1GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i5 6400 's Advantages

Integrated graphics card

Lower TDP (65W vs 165W)

Intel Core i9 9960X 's Advantages

Released 3 years and 1 months late

Higher specification of memory (DDR4-2666 vs DDR4-2133)

Larger memory bandwidth (85GB/s vs 34.1GB/s)

Higher base frequency (3.1GHz vs 2.7GHz)

Larger L3 cache size (22MB vs 6MB)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i5 6400

898

Intel Core i9 9960X +19%

1075

Cinebench R23 Multi Core

Intel Core i5 6400

3214

Intel Core i9 9960X +458%

17953

Geekbench 6 Single Core

Intel Core i5 6400

1143

Intel Core i9 9960X +25%

1432

Geekbench 6 Multi Core

Intel Core i5 6400

3312

Intel Core i9 9960X +223%

10707

Geekbench 5 Single Core

Intel Core i5 6400

853

Intel Core i9 9960X +37%

1173

Geekbench 5 Multi Core

Intel Core i5 6400

2805

Intel Core i9 9960X +441%

15176

Passmark CPU Single Core

Intel Core i5 6400

1961

Intel Core i9 9960X +32%

2608

Passmark CPU Multi Core

Intel Core i5 6400

5151

Intel Core i9 9960X +492%

30525

Intel Core i5 6400

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Intel Core i9 9960X

General Parameters

Sep 2015

Release Date

Oct 2018

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Skylake

i5-6400

Processor Number

i9-9960X

LGA-1151

Socket

LGA-2066

HD Graphics 530

Integrated Graphics

N/A

Package

14 nm

Manufacturing Process

14 nm

LGA-1151

Socket

LGA-2066

65 W

Power Consumption

165 W

-

Peak Operating Temperature

85 °C

CPU Performance

4

Performance Cores

16

4

Performance Core Threads

32

2.7 GHz

Performance Core Base Frequency

3.1 GHz

3.3 GHz

Performance Core Turbo Frequency

4.4 GHz

4

Total Core Count

16

4

Total Thread Count

32

100 MHz

Bus Frequency

-

27x

Multiplier

-

64 K per core

L1 Cache

32 K per core

256 K per core

L2 Cache

1 MB per core

6 MB shared

L3 Cache

22 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-2133, DDR3L-1600

Memory Types

DDR4-2666

64 GB

Max Memory Size

128 GB

2

Max Memory Channels

4

34.1 GB/s

Max Memory Bandwidth

85 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

-

950 MHz

GPU Max Dynamic Frequency

-

Miscellaneous

Intel Core i5 6400

Official Website

Intel Core i9 9960X

3.0

PCIe Version

3.0

16

PCIe Lanes

44

SSE4.1, SSE4.2, AVX-2

Extended Instruction Set

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

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