AMD Ryzen 9 5900H vs AMD Ryzen 9 7945HX

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We compared two laptop CPUs: AMD Ryzen 9 5900H with 8 cores 3.3GHz and AMD Ryzen 9 7945HX with 16 cores 2.5GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 9 5900H 's Advantages

Higher specification of memory (LPDDR4-4266 vs DDR5-5200)

Higher base frequency (3.3GHz vs 2.5GHz)

Lower TDP (45W vs 55W)

AMD Ryzen 9 7945HX 's Advantages

Released 1 years and 9 months late

Larger memory bandwidth (83.2GB/s vs 68.27GB/s)

Newer PCIe version (5.0 vs 3.0)

Larger L3 cache size (64MB vs 16MB)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 5900H

1466

AMD Ryzen 9 7945HX +33%

1963

Cinebench R23 Multi Core

AMD Ryzen 9 5900H

12815

AMD Ryzen 9 7945HX +169%

34581

Geekbench 6 Single Core

AMD Ryzen 9 5900H

2034

AMD Ryzen 9 7945HX +42%

2906

Geekbench 6 Multi Core

AMD Ryzen 9 5900H

7376

AMD Ryzen 9 7945HX +163%

19413

Geekbench 5 Single Core

AMD Ryzen 9 5900H

1528

AMD Ryzen 9 7945HX +37%

2095

Geekbench 5 Multi Core

AMD Ryzen 9 5900H

8790

AMD Ryzen 9 7945HX +121%

19488

Passmark CPU Single Core

AMD Ryzen 9 5900H

3308

AMD Ryzen 9 7945HX +23%

4076

Passmark CPU Multi Core

AMD Ryzen 9 5900H

20753

AMD Ryzen 9 7945HX +166%

55213

AMD Ryzen 9 5900H

VS

AMD Ryzen 9 7945HX

General Parameters

Apr 2021

Release Date

Jan 2023

AMD

Manufacturer

Amd

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Cezanne

Core Architecture

Zen 4 (Dragon Range)

FP6

Socket

FL1

Radeon RX Vega 8

Integrated Graphics

Radeon 610M

Package

-

Transistor Count

13.1 billions

7 nm

Manufacturing Process

5 nm

FP6

Socket

FL1

45 W

Power Consumption

55-75 W

105 °C

Peak Operating Temperature

100°C

CPU Performance

8

Performance Cores

16

Performance Core Threads

32

3.3 GHz

Performance Core Base Frequency

2.5 GHz

4.6 GHz

Performance Core Turbo Frequency

5.4 GHz

8

Total Core Count

16

Total Thread Count

32

100 MHz

Bus Frequency

100 MHz

33x

Multiplier

25x

64 K per core

L1 Cache

64 K per core

512 K per core

L2 Cache

1 MB per core

16 MB shared

L3 Cache

64 MB shared

No

Unlocked Multiplier

Yes

Memory Parameters

DDR4-3200, LPDDR4-4266

Memory Types

DDR5-5200

64 GB

Max Memory Size

64 GB

2

Max Memory Channels

2

68.27 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

1750 MHz

GPU Max Dynamic Frequency

2200 MHz

512

Shader Units

128

32

Texture Units

8

Raster Operation Units

4

-

Execution Units

2

15 W

Power Consumption

15 W

-

Graphics Performance

0.49 TFLOPS

Miscellaneous

-

Official Website

AMD Ryzen 9 7945HX

3.0

PCIe Version

5.0

16

PCIe Lanes

28

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