AMD Ryzen 5 8645HS vs AMD Ryzen 7 7840H

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We compared two laptop CPUs: AMD Ryzen 5 8645HS with 6 cores 4.3GHz and AMD Ryzen 7 7840H with 8 cores 3.8GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 5 8645HS 's Advantages

Released 11 months late

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

Higher base frequency (4.3GHz vs 3.8GHz)

Lower TDP (35W vs 35W)

AMD Ryzen 7 7840H 's Advantages

Better graphics card performance

Newer PCIe version (4 vs 4.0)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 5 8645HS

1732

AMD Ryzen 7 7840H +3%

1800

Cinebench R23 Multi Core

AMD Ryzen 5 8645HS

13085

AMD Ryzen 7 7840H +36%

17887

Geekbench 6 Single Core

AMD Ryzen 5 8645HS

2229

AMD Ryzen 7 7840H +17%

2625

Geekbench 6 Multi Core

AMD Ryzen 5 8645HS

9891

AMD Ryzen 7 7840H +19%

11813

Cinebench 2024 Single Core

AMD Ryzen 5 8645HS

103

AMD Ryzen 7 7840H +1%

105

Cinebench 2024 Multi Core

AMD Ryzen 5 8645HS

702

AMD Ryzen 7 7840H +34%

941

AMD Ryzen 5 8645HS

VS

AMD Ryzen 7 7840H

General Parameters

Dec 2023

Release Date

Jan 2023

Amd

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

-

Hawk Point

Core Architecture

Phoenix

FP8

Socket

AMD Socket FP8

Radeon 760M

Integrated Graphics

Radeon 780M

Ryzen 5 (Zen 4 (Hawk Point))

Generation

Ryzen 7 (Zen 4 (Phoenix))

Package

25 billions

Transistor Count

25 billions

4 nm

Manufacturing Process

4 nm

FP8

Socket

AMD Socket FP8

35-54 W

Power Consumption

35 W

100°C

Peak Operating Temperature

100 °C

TSMC

Foundry

TSMC

178 mm²

Die Size

178 mm²

FP8, FP7, FP7r2

Package

FP8, FP7, FP7r2

CPU Performance

6

Performance Cores

-

12

Performance Core Threads

-

4.3 GHz

Performance Core Base Frequency

3.8 GHz

5 GHz

Performance Core Turbo Frequency

5.1 GHz

6

Total Core Count

8

12

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

43x

Multiplier

38.0

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, LPDDR5x-7500

Memory Types

DDR5-5600

256 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

89.6 GB/s

Max Memory Bandwidth

89.6 GB/s

No

ECC Memory Support

Yes

Graphics Card Parameters

true

Integrated Graphics

true

1500 MHz

GPU Base Frequency

-

2600 MHz

GPU Max Dynamic Frequency

2700 MHz

384

Shader Units

-

24

Texture Units

-

16

Raster Operation Units

-

6

Execution Units

12

15 W

Power Consumption

-

4.06 TFLOPS

Graphics Performance

10 TFLOPS

Miscellaneous

AMD Ryzen 5 8645HS

Official Website

AMD Ryzen 7 7840H

4.0

PCIe Version

4

20

PCIe Lanes

20

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