Intel Core i7 7820X vs Intel Core i5 8400T

VS

Intel Core i7 7820X

Intel Core i5 8400T

We compared two desktop CPUs: Intel Core i7 7820X with 8 cores 3.6GHz and Intel Core i5 8400T with 6 cores 1.7GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

Intel Core i7 7820X 's Advantages

Larger memory bandwidth (79.47GB/s vs 41.6GB/s)

Higher base frequency (3.6GHz vs 1.7GHz)

Larger L3 cache size (11MB vs 9MB)

Intel Core i5 8400T 's Advantages

Released 11 months late

Integrated graphics card

Lower TDP (35W vs 140W)

Score

Benchmark

Cinebench R23 Single Core

Intel Core i7 7820X +72%

1338

Intel Core i5 8400T

774

Cinebench R23 Multi Core

Intel Core i7 7820X +267%

13358

Intel Core i5 8400T

3638

Geekbench 6 Single Core

Intel Core i7 7820X +11%

1252

Intel Core i5 8400T

1120

Geekbench 6 Multi Core

Intel Core i7 7820X +104%

7510

Intel Core i5 8400T

3670

Geekbench 5 Single Core

Intel Core i7 7820X +26%

1120

Intel Core i5 8400T

886

Geekbench 5 Multi Core

Intel Core i7 7820X +112%

8504

Intel Core i5 8400T

4000

Passmark CPU Single Core

Intel Core i7 7820X +32%

2536

Intel Core i5 8400T

1917

Passmark CPU Multi Core

Intel Core i7 7820X +130%

17189

Intel Core i5 8400T

7447

Intel Core i7 7820X

VS

Intel Core i5 8400T

General Parameters

May 2017

Release Date

Apr 2018

Intel

Manufacturer

Intel

Desktop

Type

Desktop

x86-64

Instruction Set

x86-64

Skylake

Core Architecture

Coffee Lake

i7-7820X

Processor Number

i5-8400T

LGA-2066

Socket

LGA-1151

N/A

Integrated Graphics

UHD Graphics 630

Package

14 nm

Manufacturing Process

14 nm

140 W

Power Consumption

35 W

99 °C

Peak Operating Temperature

100 °C

CPU Performance

8

Performance Cores

6

16

Performance Core Threads

6

3.6 GHz

Performance Core Base Frequency

1.7 GHz

4.3 GHz

Performance Core Turbo Frequency

3.3 GHz

8

Total Core Count

6

16

Total Thread Count

6

100 MHz

Bus Frequency

100 MHz

36x

Multiplier

17x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

256 K per core

11 MB shared

L3 Cache

9 MB shared

Yes

Unlocked Multiplier

No

Memory Parameters

DDR4-2666

Memory Types

DDR4-2666

128 GB

Max Memory Size

128 GB

4

Max Memory Channels

2

79.47 GB/s

Max Memory Bandwidth

41.6 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

-

Integrated Graphics

true

-

GPU Base Frequency

350 MHz

-

GPU Max Dynamic Frequency

1050 MHz

-

Shader Units

192

-

Texture Units

24

-

Raster Operation Units

3

-

Execution Units

24

-

Power Consumption

15 W

-

Max Resolution

4096x2304 - 60 Hz

-

Graphics Performance

0.38 TFLOPS

Miscellaneous

Intel Core i7 7820X

Official Website

Intel Core i5 8400T

3.0

PCIe Version

3.0

28

PCIe Lanes

16

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

Extended Instruction Set

SSE4.1, SSE4.2, AVX-2

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