AMD Ryzen 7 7840H vs AMD Ryzen 9 7945HX3D

VS

AMD Ryzen 7 7840H

AMD Ryzen 9 7945HX3D

We compared two laptop CPUs: AMD Ryzen 7 7840H with 8 cores 3.8GHz and AMD Ryzen 9 7945HX3D with 16 cores 2.3GHz . 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)

Higher base frequency (3.8GHz vs 2.3GHz)

More modern manufacturing process (4nm vs 5nm)

Lower TDP (35W vs 55W)

AMD Ryzen 9 7945HX3D 's Advantages

Released 6 months late

Newer PCIe version (5 vs 4)

Larger L3 cache size (128MB vs 16MB)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 7 7840H

1757

AMD Ryzen 9 7945HX3D +10%

1940

Cinebench R23 Multi Core

AMD Ryzen 7 7840H

15930

AMD Ryzen 9 7945HX3D +109%

33329

Geekbench 6 Single Core

AMD Ryzen 7 7840H

2625

AMD Ryzen 9 7945HX3D +6%

2783

Geekbench 6 Multi Core

AMD Ryzen 7 7840H

11813

AMD Ryzen 9 7945HX3D +36%

16080

Blender

AMD Ryzen 7 7840H

224

AMD Ryzen 9 7945HX3D +112%

475

Geekbench 5 Single Core

AMD Ryzen 7 7840H

1909

AMD Ryzen 9 7945HX3D +11%

2138

Geekbench 5 Multi Core

AMD Ryzen 7 7840H

11494

AMD Ryzen 9 7945HX3D +66%

19153

AMD Ryzen 7 7840H

VS

AMD Ryzen 9 7945HX3D

General Parameters

Jan 2023

Release Date

Jul 2023

AMD

Manufacturer

AMD

Laptop

Type

Laptop

Phoenix

Core Architecture

Dragon Range

AMD Socket FP8

Socket

AMD Socket FL1

Radeon 780M

Integrated Graphics

Radeon 610M

Ryzen 7 (Zen 4 (Phoenix))

Generation

Ryzen 9 (Zen 4 (Dragon Range))

Package

25 billions

Transistor Count

17.84 billions

4 nm

Manufacturing Process

5 nm

35 W

Power Consumption

55 W

100 °C

Peak Operating Temperature

89 °C

TSMC

Foundry

TSMC

178 mm²

Die Size

2x71 mm²

-

I/O Process Size

6 nm

-

I/O Die Size

122 mm²

CPU Performance

3.8 GHz

Performance Core Base Frequency

2.3 GHz

5.1 GHz

Performance Core Turbo Frequency

5.4 GHz

8

Total Core Count

16

Total Thread Count

32

100 MHz

Bus Frequency

100 MHz

38.0

Multiplier

23.0

64 K per core

L1 Cache

64 KB per core

1 MB per core

L2 Cache

1 MB per core

16 MB shared

L3 Cache

128 MB shared

No

Unlocked Multiplier

Yes

1

SMP

1

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

Yes

Graphics Card Parameters

true

Integrated Graphics

true

2700 MHz

GPU Max Dynamic Frequency

2200 MHz

12

Execution Units

2

10 TFLOPS

Graphics Performance

0.49 TFLOPS

Miscellaneous

AMD Ryzen 7 7840H

Official Website

AMD Ryzen 9 7945HX3D

4

PCIe Version

5

20

PCIe Lanes

28

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