AMD Ryzen 5 7645HX vs AMD Ryzen 7 7840HS

VS

We compared two laptop CPUs: AMD Ryzen 5 7645HX with 6 cores 4.0GHz and AMD Ryzen 7 7840HS 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 7645HX 's Advantages

Newer PCIe version (5.0 vs 4.0)

Higher base frequency (4.0GHz vs 3.8GHz)

Larger L3 cache size (32MB vs 16MB)

AMD Ryzen 7 7840HS 's Advantages

Better graphics card performance

Higher specification of memory (LPDDR5x-7500 vs DDR5-5200)

Larger memory bandwidth (89.6GB/s vs 83.2GB/s)

More modern manufacturing process (4nm vs 5nm)

Lower TDP (35W vs 45W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 5 7645HX +1%

1808

AMD Ryzen 7 7840HS

1789

Cinebench R23 Multi Core

AMD Ryzen 5 7645HX

13836

AMD Ryzen 7 7840HS +22%

16992

Geekbench 6 Single Core

AMD Ryzen 5 7645HX +9%

2720

AMD Ryzen 7 7840HS

2477

Geekbench 6 Multi Core

AMD Ryzen 5 7645HX

11906

AMD Ryzen 7 7840HS +2%

12153

Geekbench 5 Single Core

AMD Ryzen 5 7645HX

1895

AMD Ryzen 7 7840HS +1%

1915

Geekbench 5 Multi Core

AMD Ryzen 5 7645HX

11141

AMD Ryzen 7 7840HS

11238

AMD Ryzen 5 7645HX

VS

AMD Ryzen 7 7840HS

General Parameters

Jan 2023

Release Date

Jan 2023

AMD

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Zen 4 (Dragon Range)

Core Architecture

Zen 4 (Phoenix)

FL1

Socket

FP8

Radeon 610M

Integrated Graphics

Radeon 780M

Package

-

Transistor Count

25 billions

5 nm

Manufacturing Process

4 nm

FL1

Socket

FP8

45-75 W

Power Consumption

35-54 W

100°C

Peak Operating Temperature

100°C

CPU Performance

6

Performance Cores

8

12

Performance Core Threads

16

4.0 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

40x

Multiplier

38x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

1 MB per core

32 MB shared

L3 Cache

16 MB shared

Yes

Unlocked Multiplier

No

Memory Parameters

DDR5-5200

Memory Types

DDR5-5600, LPDDR5x-7500

64 GB

Max Memory Size

256 GB

2

Max Memory Channels

2

83.2 GB/s

Max Memory Bandwidth

89.6 GB/s

No

ECC Memory Support

-

Graphics Card Parameters

true

Integrated Graphics

true

1500 MHz

GPU Base Frequency

1500 MHz

2200 MHz

GPU Max Dynamic Frequency

2700 MHz

128

Shader Units

768

8

Texture Units

48

4

Raster Operation Units

32

2

Execution Units

12

15 W

Power Consumption

15 W

-

Max Resolution

7680x4320 - 60 Hz

0.49 TFLOPS

Graphics Performance

10 TFLOPS

Miscellaneous

AMD Ryzen 5 7645HX

Official Website

AMD Ryzen 7 7840HS

5.0

PCIe Version

4.0

28

PCIe Lanes

20

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