AMD Ryzen 7 7840H vs AMD Ryzen 5 8540U

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We compared two laptop CPUs: AMD Ryzen 7 7840H with 8 cores 3.8GHz and AMD Ryzen 5 8540U with 6 cores 3.2GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 7 7840H 's Advantages

Better graphics card performance

Higher base frequency (3.8GHz vs 3.2GHz)

AMD Ryzen 5 8540U 's Advantages

Released 11 months late

Higher specification of memory (LPDDR5x-7500 vs DDR5-5600)

Newer PCIe version (4.0 vs 4)

Lower TDP (15W vs 35W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 7 7840H

1800

AMD Ryzen 5 8540U

1814

Cinebench R23 Multi Core

AMD Ryzen 7 7840H +70%

17887

AMD Ryzen 5 8540U

10508

Geekbench 6 Single Core

AMD Ryzen 7 7840H +9%

2625

AMD Ryzen 5 8540U

2390

Geekbench 6 Multi Core

AMD Ryzen 7 7840H +44%

11813

AMD Ryzen 5 8540U

8172

AMD Ryzen 7 7840H

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AMD Ryzen 5 8540U

General Parameters

Jan 2023

Release Date

Dec 2023

AMD

Manufacturer

Amd

Laptop

Type

Laptop

-

Instruction Set

x86-64

Phoenix

Core Architecture

Hawk Point

AMD Socket FP8

Socket

FP7

Radeon 780M

Integrated Graphics

Radeon 740M

Ryzen 7 (Zen 4 (Phoenix))

Generation

Ryzen 5 (Zen 4 (Hawk Point))

Package

25 billions

Transistor Count

20.9 billions

4 nm

Manufacturing Process

4 nm

AMD Socket FP8

Socket

FP7

35 W

Power Consumption

15-30 W

100 °C

Peak Operating Temperature

100°C

TSMC

Foundry

TSMC

178 mm²

Die Size

137 mm²

FP8, FP7, FP7r2

Package

FP7, FP7r2

CPU Performance

-

Performance Cores

6

-

Performance Core Threads

12

3.8 GHz

Performance Core Base Frequency

3.2 GHz

5.1 GHz

Performance Core Turbo Frequency

4.9 GHz

-

Efficiency Cores

4

-

Efficiency Core Threads

8

Total Core Count

6

16

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

38.0

Multiplier

32x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

1 MB per core

16 MB shared

L3 Cache

16 MB shared

No

Unlocked Multiplier

No

1

SMP

1

Memory Parameters

DDR5-5600

Memory Types

DDR5-5600, LPDDR5x-7500

256 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

89.6 GB/s

Max Memory Bandwidth

89.6 GB/s

Yes

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

-

GPU Base Frequency

1500 MHz

2700 MHz

GPU Max Dynamic Frequency

2800 MHz

-

Shader Units

256

-

Texture Units

16

-

Raster Operation Units

8

12

Execution Units

4

-

Power Consumption

15 W

10 TFLOPS

Graphics Performance

2.56 TFLOPS

Miscellaneous

AMD Ryzen 7 7840H

Official Website

AMD Ryzen 5 8540U

4

PCIe Version

4.0

20

PCIe Lanes

14

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