AMD Ryzen 7 7745HX vs AMD Ryzen 7 7840HS

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CPU comparison with benchmarks


AMD Ryzen 7 7745HX CPU1 vs CPU2 AMD Ryzen 7 7840HS
AMD Ryzen 7 7745HX AMD Ryzen 7 7840HS

CPU comparison

AMD Ryzen 7 7745HX or AMD Ryzen 7 7840HS - which processor is faster? In this comparison we look at the differences and analyze which of these two CPUs is better. We compare the technical data and benchmark results.

The AMD Ryzen 7 7745HX has 8 cores with 16 threads and clocks with a maximum frequency of 5.10 GHz. Up to 128 GB of memory is supported in 2 memory channels. The AMD Ryzen 7 7745HX was released in Q1/2023.

The AMD Ryzen 7 7840HS has 8 cores with 16 threads and clocks with a maximum frequency of 5.10 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The AMD Ryzen 7 7840HS was released in Q1/2023.
AMD Ryzen 7 (67) Family AMD Ryzen 7 (67)
AMD Ryzen 7045 (6) CPU group AMD Ryzen 7040 (21)
6 Generation 6
Dragon Range (Zen 4) Architecture Phoenix (Zen 4)
Mobile Segment Mobile
-- Predecessor --
-- Successor AMD Ryzen 7 8840HS

CPU Cores and Base Frequency

The AMD Ryzen 7 7745HX has 8 CPU cores and can calculate 16 threads in parallel. The clock frequency of the AMD Ryzen 7 7745HX is 3.60 GHz (5.10 GHz) while the AMD Ryzen 7 7840HS has 8 CPU cores and 16 threads can calculate simultaneously. The clock frequency of the AMD Ryzen 7 7840HS is at 3.80 GHz (5.10 GHz).
AMD Ryzen 7 7745HX Characteristic AMD Ryzen 7 7840HS
8 Cores 8
16 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? No
3.60 GHz Frequency 3.80 GHz
5.10 GHz Turbo Frequency (1 Core) 5.10 GHz
-- Turbo Frequency (All Cores) 4.25 GHz

Artificial Intelligence and Machine Learning

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. Algorithms for ML improve their performance the more data they have collected via software. ML tasks can be processed up to 10,000 times faster than with a classic processor.
AMD Ryzen 7 7745HX Characteristic AMD Ryzen 7 7840HS
-- AI hardware AMD Ryzen AI
-- AI specifications AMD dedicated AI XDNA Technology

Internal Graphics

The AMD Ryzen 7 7745HX or AMD Ryzen 7 7840HS has integrated graphics, called iGPU for short. The iGPU uses the system's main memory as graphics memory and sits on the processor's die.
AMD Radeon 610M GPU AMD Radeon 780M
0.40 GHz GPU frequency 0.80 GHz
2.20 GHz GPU (Turbo) 2.70 GHz
9 GPU Generation 3
6 nm Technology 4 nm
3 Max. displays 4
2 Compute units 12
128 Shader 768
Yes Hardware Raytracing Yes
No Frame Generation AMD FSR
8 GB Max. GPU Memory 32 GB
12 DirectX Version 12

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.
AMD Radeon 610M GPU AMD Radeon 780M
Decode / Encode Codec h265 / HEVC (8 bit) Decode / Encode
Decode / Encode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode / Encode Codec VP9 Decode
Decode / Encode Codec VP8 Decode
Decode Codec AV1 Decode / Encode
Decode / Encode Codec AVC Decode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The AMD Ryzen 7 7745HX can use up to 128 GB of memory in 2 memory channels. The maximum memory bandwidth is 83.2 GB/s. The AMD Ryzen 7 7840HS supports up to 256 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 120.0 GB/s.
AMD Ryzen 7 7745HX Characteristic AMD Ryzen 7 7840HS
DDR5-5200 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
128 GB Max. Memory 256 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
83.2 GB/s Max. Bandwidth 120.0 GB/s
Yes ECC Yes
8.00 MB L2 Cache 8.00 MB
32.00 MB L3 Cache 16.00 MB
5.0 PCIe version 4.0
28 PCIe lanes 20
110.3 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The thermal design power (TDP for short) of the AMD Ryzen 7 7745HX is 55 W, while the AMD Ryzen 7 7840HS has a TDP of 54 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
AMD Ryzen 7 7745HX Characteristic AMD Ryzen 7 7840HS
55 W TDP (PL1 / PBP) 54 W
-- TDP (PL2) --
75 W TDP up 60 W
45 W TDP down 35 W
100 °C Tjunction max. 100 °C

Technical details

The AMD Ryzen 7 7745HX is manufactured in 5 nm and has 40.00 MB cache. The AMD Ryzen 7 7840HS is manufactured in 4 nm and has a 24.00 MB cache.
AMD Ryzen 7 7745HX Characteristic AMD Ryzen 7 7840HS
5 nm Technology 4 nm
Chiplet Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
FL1 Socket FP8
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q1/2023 Release date Q1/2023
-- Release price --
show more data show more data


Rate these processors

Here you can rate the AMD Ryzen 7 7745HX to help other visitors make their purchasing decisions. The average rating is 5.0 stars (5 ratings). Rate now:
Here you can rate the AMD Ryzen 7 7840HS to help other visitors make their purchasing decisions. The average rating is 4.7 stars (52 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 4 CPU benchmarks
AMD Ryzen 7 7745HX (100%)
AMD Ryzen 7 7840HS (94%)
⌀ Multi core performance in 4 CPU benchmarks
AMD Ryzen 7 7745HX (100%)
AMD Ryzen 7 7840HS (90%)

Cinebench 2024 (Single-Core)

The Cinebench 2024 benchmark is based on the Redshift rendering engine, which is also used in Maxon's 3D program Cinema 4D. The benchmark runs are each 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 5.10 GHz
107 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz
102 (95%)

Cinebench 2024 (Multi-Core)

The Multi-Core test of the Cinebench 2024 benchmark uses all cpu cores to render using the Redshift rendering engine, which is also used in Maxons Cinema 4D. The benchmark run is 10 minutes long to test whether the processor is limited by its heat generation.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 5.10 GHz
929 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz
866 (93%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 5.10 GHz
1842 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz
1757 (95%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
18065 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz
15930 (88%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 5.10 GHz
2002 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz
1857 (93%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
12744 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz
11334 (89%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 5.10 GHz
2674 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 5.10 GHz
2456 (92%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
13452 (100%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz
12135 (90%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
AMD Radeon 610M @ 2.20 GHz
443 (11%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
AMD Radeon 780M @ 2.70 GHz
4201 (100%)

CPU performance per watt (efficiency)

Efficiency of the processor under full load in the Cinebench R23 (multi-core) benchmark. The benchmark result is divided by the average energy required (CPU package power in watts). The higher the value, the more efficient the CPU is under full load.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
18,065 CB R23 MC @ 143 W
126 (44%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
15,930 CB R23 MC @ 55 W
287 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
0 (0%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz
28412 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
0 (0%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 4.25 GHz
624 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
0 (0%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 3.80 GHz
6744 (100%)

Performance for Artificial Intelligence (AI) and Machine Learning (ML)

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
AMD Ryzen 7 7745HX AMD Ryzen 7 7745HX
8C 16T @ 3.60 GHz
0 (0%)
AMD Ryzen 7 7840HS AMD Ryzen 7 7840HS
8C 16T @ 3.80 GHz
10 (100%)

Devices using this processor
AMD Ryzen 7 7745HX AMD Ryzen 7 7840HS
Unknown Lenovo IdeaPad Pro 5 14
Lenovo IdeaPad Pro 5 16

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