AMD Ryzen 7 7840H vs AMD Ryzen 5 7645HX

VS

AMD Ryzen 7 7840H

AMD Ryzen 5 7645HX

We compared two laptop CPUs: AMD Ryzen 7 7840H with 8 cores 3.8GHz and AMD Ryzen 5 7645HX with 6 cores 4.0GHz . 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 specification of memory (5600 vs 5200)

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

More modern manufacturing process (4nm vs 5nm)

Lower TDP (35W vs 75W)

AMD Ryzen 5 7645HX 's Advantages

Newer PCIe version (5.0 vs 4)

Higher base frequency (4.0GHz vs 3.8GHz)

Larger L3 cache size (32MB vs 16MB)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 7 7840H

1757

AMD Ryzen 5 7645HX +2%

1800

Cinebench R23 Multi Core

AMD Ryzen 7 7840H +14%

15930

AMD Ryzen 5 7645HX

13954

Geekbench 6 Single Core

AMD Ryzen 7 7840H

2625

AMD Ryzen 5 7645HX +3%

2720

Geekbench 6 Multi Core

AMD Ryzen 7 7840H

11813

AMD Ryzen 5 7645HX

11906

Geekbench 5 Single Core

AMD Ryzen 7 7840H

1909

AMD Ryzen 5 7645HX

1895

Geekbench 5 Multi Core

AMD Ryzen 7 7840H +3%

11494

AMD Ryzen 5 7645HX

11141

AMD Ryzen 7 7840H

VS

AMD Ryzen 5 7645HX

General Parameters

Jan 2023

Release Date

Jan 2023

AMD

Manufacturer

AMD

Laptop

Type

Laptop

-

Instruction Set

x86-64

Phoenix

Core Architecture

Zen 4 (Dragon Range)

AMD Socket FP8

Socket

FL1

Radeon 780M

Integrated Graphics

Radeon 610M

Ryzen 7 (Zen 4 (Phoenix))

Generation

-

Package

25 billions

Transistor Count

-

4 nm

Manufacturing Process

5 nm

35 W

Power Consumption

45-75 W

100 °C

Peak Operating Temperature

100°C

TSMC

Foundry

-

178 mm²

Die Size

-

CPU Performance

-

Performance Cores

6

-

Performance Core Threads

12

3.8 GHz

Performance Core Base Frequency

4.0 GHz

5.1 GHz

Performance Core Turbo Frequency

5 GHz

8

Total Core Count

6

16

Total Thread Count

12

100 MHz

Bus Frequency

100 MHz

38.0

Multiplier

40x

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

32 MB shared

No

Unlocked Multiplier

Yes

1

SMP

-

Memory Parameters

DDR5-5600

Memory Types

DDR5-5200

256 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

89.6 GB/s

Max Memory Bandwidth

83.2 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

2200 MHz

-

Shader Units

128

-

Texture Units

8

-

Raster Operation Units

4

12

Execution Units

2

-

Power Consumption

15 W

10 TFLOPS

Graphics Performance

0.49 TFLOPS

Miscellaneous

AMD Ryzen 7 7840H

Official Website

AMD Ryzen 5 7645HX

4

PCIe Version

5.0

20

PCIe Lanes

28

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