AMD Ryzen 9 7945HX vs AMD Ryzen 7 5800U

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We compared two laptop CPUs: AMD Ryzen 9 7945HX with 16 cores 2.5GHz and AMD Ryzen 7 5800U with 8 cores 1.9GHz . You will find out which processor performs better in benchmark tests, key specifications, power consumption and more.

Main Differences

AMD Ryzen 9 7945HX 's Advantages

Released 2 years late

Larger memory bandwidth (83.2GB/s vs 51.2GB/s)

Newer PCIe version (5.0 vs 3.0)

Higher base frequency (2.5GHz vs 1.9GHz)

Larger L3 cache size (64MB vs 16MB)

AMD Ryzen 7 5800U 's Advantages

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

Lower TDP (10W vs 55W)

Score

Benchmark

Cinebench R23 Single Core

AMD Ryzen 9 7945HX +38%

1963

AMD Ryzen 7 5800U

1418

Cinebench R23 Multi Core

AMD Ryzen 9 7945HX +325%

34581

AMD Ryzen 7 5800U

8131

Geekbench 6 Single Core

AMD Ryzen 9 7945HX +59%

2906

AMD Ryzen 7 5800U

1826

Geekbench 6 Multi Core

AMD Ryzen 9 7945HX +201%

19413

AMD Ryzen 7 5800U

6437

Blender

AMD Ryzen 9 7945HX +331%

505

AMD Ryzen 7 5800U

117

Geekbench 5 Single Core

AMD Ryzen 9 7945HX +46%

2095

AMD Ryzen 7 5800U

1427

Geekbench 5 Multi Core

AMD Ryzen 9 7945HX +201%

19488

AMD Ryzen 7 5800U

6470

Passmark CPU Single Core

AMD Ryzen 9 7945HX +34%

4076

AMD Ryzen 7 5800U

3025

Passmark CPU Multi Core

AMD Ryzen 9 7945HX +197%

55213

AMD Ryzen 7 5800U

18588

AMD Ryzen 9 7945HX

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AMD Ryzen 7 5800U

General Parameters

Jan 2023

Release Date

Jan 2021

Amd

Manufacturer

AMD

Laptop

Type

Laptop

x86-64

Instruction Set

x86-64

Zen 4 (Dragon Range)

Core Architecture

Cezanne

FL1

Socket

FP6

Radeon 610M

Integrated Graphics

Radeon RX Vega 8

Package

13.1 billions

Transistor Count

-

5 nm

Manufacturing Process

7 nm

FL1

Socket

FP6

55-75 W

Power Consumption

10-25 W

100°C

Peak Operating Temperature

105 °C

CPU Performance

16

Performance Cores

8

32

Performance Core Threads

16

2.5 GHz

Performance Core Base Frequency

1.9 GHz

5.4 GHz

Performance Core Turbo Frequency

4.4 GHz

16

Total Core Count

8

32

Total Thread Count

16

100 MHz

Bus Frequency

100 MHz

25x

Multiplier

19x

64 K per core

L1 Cache

64 K per core

1 MB per core

L2 Cache

512 K per core

64 MB shared

L3 Cache

16 MB shared

Yes

Unlocked Multiplier

No

Memory Parameters

DDR5-5200

Memory Types

DDR4-3200, LPDDR4-4266

64 GB

Max Memory Size

32 GB

2

Max Memory Channels

2

83.2 GB/s

Max Memory Bandwidth

51.2 GB/s

No

ECC Memory Support

No

Graphics Card Parameters

true

Integrated Graphics

true

1500 MHz

GPU Base Frequency

-

2200 MHz

GPU Max Dynamic Frequency

2000 MHz

128

Shader Units

512

8

Texture Units

32

4

Raster Operation Units

8

2

Execution Units

-

15 W

Power Consumption

15 W

0.49 TFLOPS

Graphics Performance

-

Miscellaneous

AMD Ryzen 9 7945HX

Official Website

AMD Ryzen 7 5800U

5.0

PCIe Version

3.0

28

PCIe Lanes

12

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