AMD EPYC 7351 vs AMD Ryzen 5 7645HX

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CPU comparison with benchmarks


AMD EPYC 7351 CPU1 vs CPU2 AMD Ryzen 5 7645HX
AMD EPYC 7351 AMD Ryzen 5 7645HX

CPU comparison

In this CPU comparison, we compare the AMD EPYC 7351 and the AMD Ryzen 5 7645HX and use benchmarks to check which processor is faster.

We compare the AMD EPYC 7351 16 core processor released in Q3/2017 with the AMD Ryzen 5 7645HX which has 6 CPU cores and was introduced in Q1/2023.
AMD EPYC (129) Family AMD Ryzen 5 (85)
AMD EPYC 7001 (12) CPU group AMD Ryzen 7045 (6)
1 Generation 6
Naples (Zen) Architecture Dragon Range (Zen 4)
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD EPYC 7351 is a 16 core processor with a clock frequency of 2.40 GHz (2.90 GHz). The processor can compute 32 threads at the same time. The AMD Ryzen 5 7645HX clocks with 4.00 GHz (5.00 GHz), has 6 CPU cores and can calculate 12 threads in parallel.

AMD EPYC 7351 Characteristic AMD Ryzen 5 7645HX
16 Cores 6
32 Threads 12
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? Yes
2.40 GHz Frequency 4.00 GHz
2.90 GHz Turbo Frequency (1 Core) 5.00 GHz
2.90 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 EPYC 7351 Characteristic AMD Ryzen 5 7645HX
-- AI hardware --
-- AI specifications --

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.

no iGPU GPU AMD Radeon 610M
GPU frequency 0.40 GHz
-- GPU (Turbo) 2.20 GHz
-- GPU Generation 9
Technology 6 nm
Max. displays 3
-- Compute units 2
-- Shader 128
No Hardware Raytracing Yes
No Frame Generation No
-- Max. GPU Memory 8 GB
-- 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.

no iGPU GPU AMD Radeon 610M
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
No Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
No Codec VP8 Decode / Encode
No Codec AV1 Decode
No Codec AVC Decode / Encode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

Up to GB of memory in a maximum of 8 memory channels is supported by the AMD EPYC 7351, while the AMD Ryzen 5 7645HX supports a maximum of 128 GB of memory with a maximum memory bandwidth of 83.2 GB/s enabled.

AMD EPYC 7351 Characteristic AMD Ryzen 5 7645HX
DDR4-2400, DDR4-2666 Memory DDR5-5200
Max. Memory 128 GB
8 (Octa Channel) Memory channels 2 (Dual Channel)
170.6 GB/s Max. Bandwidth 83.2 GB/s
Yes ECC Yes
-- L2 Cache 6.00 MB
64.00 MB L3 Cache 32.00 MB
3.0 PCIe version 5.0
128 PCIe lanes 28
126.1 GB/s PCIe Bandwidth 110.3 GB/s

Thermal Management

The AMD EPYC 7351 has a TDP of 170 W. The TDP of the AMD Ryzen 5 7645HX is 55 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

AMD EPYC 7351 Characteristic AMD Ryzen 5 7645HX
170 W TDP (PL1 / PBP) 55 W
-- TDP (PL2) --
-- TDP up 75 W
-- TDP down 45 W
-- Tjunction max. 100 °C

Technical details

The AMD EPYC 7351 has 64.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 5 7645HX is at 38.00 MB. The processor is manufactured in 5 nm.

AMD EPYC 7351 Characteristic AMD Ryzen 5 7645HX
14 nm Technology 5 nm
Chiplet Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX2, FMA3 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
SP3 Socket FL1
AMD-V, SVM Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q3/2017 Release date Q1/2023
850 $ Release price --
show more data show more data


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Here you can rate the AMD Ryzen 5 7645HX to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 0 CPU benchmarks
AMD EPYC 7351 (0%)
AMD Ryzen 5 7645HX (0%)
⌀ Multi core performance in 1 CPU benchmarks
AMD EPYC 7351 (100%)
AMD Ryzen 5 7645HX (79%)

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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
17401 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
13824 (79%)

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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
0 (0%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 5.00 GHz
1802 (100%)

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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
634 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 5.00 GHz
0 (0%)

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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
2002 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
0 (0%)

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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
717 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 5.00 GHz
0 (0%)

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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
2022 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
0 (0%)

Cinebench R20 (Single-Core)

Cinebench R20 is the successor of Cinebench R15 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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
296 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 5.00 GHz
0 (0%)

Cinebench R20 (Multi-Core)

Cinebench R20 is the successor of Cinebench R15 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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
4728 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
0 (0%)

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 EPYC 7351 AMD EPYC 7351
@ 0.00 GHz
0 (0%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
AMD Radeon 610M @ 2.20 GHz
443 (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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
23569 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 GHz
0 (0%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
128 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 5.00 GHz
0 (0%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 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 EPYC 7351 AMD EPYC 7351
16C 32T @ 2.90 GHz
2184 (100%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
6C 12T @ 4.00 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 EPYC 7351 AMD EPYC 7351
2.40 GHz
0 (0%)
AMD Ryzen 5 7645HX AMD Ryzen 5 7645HX
13,824 CB R23 MC @ 51 W
270 (100%)

Devices using this processor

AMD EPYC 7351 AMD Ryzen 5 7645HX
Unknown Unknown

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