AMD Ryzen 5 8640U vs AMD Ryzen 7 7840U

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We compared two laptop CPUs: AMD Ryzen 5 8640U with 6 cores 3.5GHz and AMD Ryzen 7 7840U with 8 cores 3.3GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 5 8640U 's Advantages

Released 7 months late

Higher base frequency (3.5GHz vs 3.3GHz)

AMD Ryzen 7 7840U 's Advantages

Better graphics card performance

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 5 8640U +2%

1819

AMD Ryzen 7 7840U

1771

Cinebench R23 Multi Core

AMD Ryzen 5 8640U

11872

AMD Ryzen 7 7840U +9%

12992

Geekbench 6 Single Core

AMD Ryzen 5 8640U

2419

AMD Ryzen 7 7840U

2401

Geekbench 6 Multi Core

AMD Ryzen 5 8640U

10350

AMD Ryzen 7 7840U +6%

10983

AMD Ryzen 5 8640U

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AMD Ryzen 7 7840U

General Parameters

Dec 2023

Release Date

May 2023

Amd

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Hawk Point

Core Architecture

Zen 4 (Phoenix)

FP7

Socket

FP8

Radeon 760M

Integrated Graphics

Radeon 780M

Ryzen 5 (Zen 4 (Hawk Point))

Generation

-

Package

25 billions

Transistor Count

25 billions

4 nm

Manufacturing Process

4 nm

FP7

Socket

FP8

15-30 W

Power Consumption

15-30 W

100°C

Peak Operating Temperature

100°C

TSMC

Foundry

-

178 mm²

Die Size

-

FP8, FP7, FP7r2

Package

-

CPU Performance

6

Performance Cores

8

12

Performance Core Threads

16

3.5 GHz

Performance Core Base Frequency

3.3 GHz

4.9 GHz

Performance Core Turbo Frequency

5.1 GHz

6

Total Core Count

8

12

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

35x

Multiplier

33x

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

-

Memory Parameters

DDR5-5600, LPDDR5x-7500

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

-

No

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

true

1500 MHz

GPU Base Frequency

1500 MHz

2600 MHz

GPU Max Dynamic Frequency

2700 MHz

384

Shader Units

768

24

Texture Units

48

16

Raster Operation Units

32

6

Execution Units

12

15 W

Power Consumption

15 W

-

Max Resolution

7680x4320 - 60 Hz

4.06 TFLOPS

Graphics Performance

8.12 TFLOPS

Miscellaneous

AMD Ryzen 5 8640U

Official Website

AMD Ryzen 7 7840U

4.0

PCIe Version

4.0

20

PCIe Lanes

20

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