AMD Ryzen 9 7945HX vs AMD Ryzen 9 5900HX

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CPU comparison with benchmarks

-VS-

CPU lineage

AMD Ryzen 9 7945HX or AMD Ryzen 9 7945HX – which processor offers superior performance? In this comparison, we examine disparities and assess which of these two CPUs outperforms the other. We delve into technical specifications and benchmark outcomes.
The AMD Ryzen 9 7945HX features 16 processor cores and has the capability to manage 32 threads concurrently.
It was released in Q1/2023 and belongs to the 6 generation of the AMD Ryzen 9 series.
To use the AMD Ryzen 9 7945HX, you'll need a motherboard with a FL1 socket.
The AMD Ryzen 9 5900HX features 8 processor cores and has the capability to manage 16 threads concurrently.
It was released in Q2/2021 and belongs to the 4 generation of the AMD Ryzen 9 series.
To use the AMD Ryzen 9 5900HX, you'll need a motherboard with a FP6 socket.
AMD Ryzen 7045 Group AMD Ryzen 5000H
6 Generation 4
Mobile Segment Mobile
AMD Ryzen 9 7945HX Name AMD Ryzen 9 5900HX
AMD Ryzen 9 Family AMD Ryzen 9
 
 

CPU Cores and Base Frequency

The AMD Ryzen 9 7945HX has 16 CPU cores and can calculate 32 threads in parallel.
The clock frequency of the AMD Ryzen 9 7945HX is 2.5 GHz
and turbo frequency for one core is 5.4 GHz.
The number of CPU cores greatly affects the speed of the processor and is an important performance indicator.
The AMD Ryzen 9 5900HX has 8 CPU cores and can calculate 16 threads in parallel.
The clock frequency of the AMD Ryzen 9 5900HX is 3.3 GHz
and turbo frequency for one core is 4.6 GHz.
32 Threads 16
16x Zen 4 Cores 8x
16 CPU Cores 8
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking No
5.4 GHz Turbo Frequency (1 core) 4.6 GHz
2.5 GHz Frequency 3.3 GHz
None None 4.2 GHz
 
 

Internal Graphics

The AMD Ryzen 9 7945HX has integrated graphics, called iGPU for short.
Specifically, the AMD Ryzen 9 7945HX uses the AMD Radeon 610M Graphics, which has 128 texture shaders
and 2 execution units.
The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
The AMD Ryzen 9 5900HX has integrated graphics, called iGPU for short.
Specifically, the AMD Ryzen 9 5900HX uses the AMD Radeon 8 Graphics (Renoir), which has 512 texture shaders
and 8 execution units.
128 Shaders 512
Q3/2022 Release date Q1/2020
6 nm Technology 7 nm
12 Direct X 12
8.0 GB Max. GPU Memory 2.0 GB
-- Max. displays --
2 Execution units 8
0.4 GHz GPU frequency 1.9 GHz
9 Generation 9
2.2 GHz GPU (Turbo) --
AMD Radeon 610M Graphics GPU name AMD Radeon 8 Graphics (Renoir)
 
 

Artificial Intelligence and Machine Learning

-- AI specifications --
-- AI hardware --
 
 

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.
Decode / Encode VP8 Decode / Encode
Decode VC-1 Decode
Decode / Encode JPEG Decode / Encode
Decode AV1 No
Decode / Encode h265 / HEVC (8 bit) Decode / Encode
Decode / Encode AVC Decode / Encode
Decode / Encode h264 Decode / Encode
Decode / Encode VP9 Decode / Encode
Decode / Encode h265 / HEVC (10 bit) Decode / Encode
 
 

Memory & PCIe

The processor supports a maximum memory capacity of 128.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 83.2 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
The processor supports a maximum memory capacity of 64.0 GB distributed across 2 memory channels. It offers a peak memory bandwidth of 51.2 GB/s. Both the type and quantity of memory can have a substantial impact on the overall system performance.
pci PCIe pci
Yes AES-NI Yes
DDR5-5200 Memory type DDR4-3200, LPDDR4-4266
Yes ECC No
128.0 GB Max. Memory 64.0 GB
2 Memory channels 2
83.2 GB/s Bandwidth 51.2 GB/s
 
 

Thermal Management

The processor has a thermal design power (TDP) of 55 W watts.
TDP indicates the cooling solution needed to effectively manage the processor's heat. It generally provides an approximate indication of the actual power consumption of the CPU itself.
The processor has a thermal design power (TDP) of 45 W watts.
None TDP down 35 W
75 W TDP up 54 W
55 W TDP (PL1 / PBP) 45 W
100 °C Tjunction max 105 °C
 
 

Technical details

The AMD Ryzen 9 7945HX is manufactured using a 5 nm process.
A smaller manufacturing process indicates a more contemporary and energy-efficient CPU.
In total, this processor boasts a generous 64.0 MB cache.
A substantial cache can significantly enhance the processor's performance, particularly in scenarios like gaming.
The AMD Ryzen 9 5900HX is manufactured using a 7 nm process.
In total, this processor boasts a generous 16.0 MB cache.
Q1/2023 Release date Q2/2021
AMD-V, SVM Virtualization AMD-V, SVM
SSE4a, SSE4.1, SSE4.2, FMA3, AVX2, AVX512 ISA extensions SSE4a, SSE4.1, SSE4.2, FMA3, AVX2
5 nm Technology 7 nm
Chiplet Chip design Chiplet
-- Release price --
Dragon Range (Zen 4) Architecture Cezanne (Zen 3)
64.0 MB L3-Cache 16.0 MB
Windows 10, Linux, Windows 11 Operating systems Windows 10, Linux, Windows 11
Technical data sheet Documents Technical data sheet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
100-000000870 Part Number --
FL1 Socket FP6
16.0 MB L2-Cache 4.0 MB
 
 

Benchmarks

Estimated results for PassMark CPU Mark

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
58842
58842
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
22815
22815

Cinebench R23 (Multi-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
32788
32788
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
13955
13955

Geekbench 5, 64bit (Multi-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
19472
19472
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
8432
8432

Geekbench 6 (Multi-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
16214
16214
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
7255
7255

Cinebench R20 (Multi-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
12914
12914
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
5474
5474

Geekbench 6 (Single-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
2734
2734
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
1992
1992

Geekbench 5, 64bit (Single-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
2130
2130
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
1510
1510

Cinebench R23 (Single-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
1955
1955
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
1478
1478

Cinebench R20 (Single-Core)

AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
758
758
AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
578
578

Blender 2.81 (bmw27)

AMD Ryzen 9 5900HX
8C 16T @ 3.3 GHz
174
174
AMD Ryzen 9 7945HX
16C 32T @ 2.5 GHz
94
94