AMD Ryzen 5 7645HX vs AMD Ryzen 5 7640H

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CPU comparison with benchmarks


AMD Ryzen 5 7645HX CPU1 vs CPU2 AMD Ryzen 5 7640H
AMD Ryzen 5 7645HX AMD Ryzen 5 7640H

CPU comparison

In this CPU comparison, we compare the AMD Ryzen 5 7645HX and the AMD Ryzen 5 7640H and use benchmarks to check which processor is faster.

We compare the AMD Ryzen 5 7645HX 6 core processor released in Q1/2023 with the AMD Ryzen 5 7640H which has 6 CPU cores and was introduced in Q1/2023.
AMD Ryzen 5 (85) Family AMD Ryzen 5 (85)
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 --

CPU Cores and Base Frequency

The AMD Ryzen 5 7645HX is a 6 core processor with a clock frequency of 4.00 GHz (5.00 GHz). The processor can compute 12 threads at the same time. The AMD Ryzen 5 7640H clocks with 4.30 GHz (5.00 GHz), has 6 CPU cores and can calculate 12 threads in parallel.

AMD Ryzen 5 7645HX Characteristic AMD Ryzen 5 7640H
6 Cores 6
12 Threads 12
normal Core architecture normal
Yes Hyperthreading Yes
Yes Overclocking ? No
4.00 GHz Frequency 4.30 GHz
5.00 GHz Turbo Frequency (1 Core) 5.00 GHz
-- Turbo Frequency (All Cores) --

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 5 7645HX Characteristic AMD Ryzen 5 7640H
-- AI hardware AMD Ryzen AI
-- AI specifications AMD dedicated AI XDNA Technology

Internal Graphics

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

AMD Radeon 610M GPU AMD Radeon 760M
0.40 GHz GPU frequency 0.80 GHz
2.20 GHz GPU (Turbo) 2.60 GHz
9 GPU Generation 10
6 nm Technology 4 nm
3 Max. displays 4
2 Compute units 8
128 Shader 512
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 760M
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

Up to 128 GB of memory in a maximum of 2 memory channels is supported by the AMD Ryzen 5 7645HX, while the AMD Ryzen 5 7640H supports a maximum of 256 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled.

AMD Ryzen 5 7645HX Characteristic AMD Ryzen 5 7640H
DDR5-5200 Memory 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
6.00 MB L2 Cache 6.00 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 AMD Ryzen 5 7645HX has a TDP of 55 W. The TDP of the AMD Ryzen 5 7640H is 54 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD Ryzen 5 7645HX Characteristic AMD Ryzen 5 7640H
55 W TDP (PL1 / PBP) 54 W
-- TDP (PL2) --
75 W TDP up --
45 W TDP down 35 W
100 °C Tjunction max. 100 °C

Technical details

The AMD Ryzen 5 7645HX has 38.00 MB cache and is manufactured in 5 nm. The cache of AMD Ryzen 5 7640H is at 22.00 MB. The processor is manufactured in 4 nm.

AMD Ryzen 5 7645HX Characteristic AMD Ryzen 5 7640H
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 FP7r2
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 --
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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 5 7645HX AMD Ryzen 5 7645HX
AMD Radeon 610M @ 2.20 GHz
443 (17%)
AMD Ryzen 5 7640H AMD Ryzen 5 7640H
AMD Radeon 760M @ 2.60 GHz
2663 (100%)

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 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 5.00 GHz
1802 (100%)
AMD Ryzen 5 7640H AMD Ryzen 5 7640H
6C 12T @ 5.00 GHz
0 (0%)

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 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
13824 (100%)
AMD Ryzen 5 7640H AMD Ryzen 5 7640H
6C 12T @ 4.30 GHz
0 (0%)

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 5 7645HX AMD Ryzen 5 7645HX
13,824 CB R23 MC @ 51 W
270 (100%)
AMD Ryzen 5 7640H AMD Ryzen 5 7640H
4.30 GHz
0 (0%)

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 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
0 (0%)
AMD Ryzen 5 7640H AMD Ryzen 5 7640H
6C 12T @ 4.30 GHz
10 (100%)

Devices using this processor

AMD Ryzen 5 7645HX AMD Ryzen 5 7640H
Unknown Unknown

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