Intel Pentium Gold 6405U vs AMD Ryzen 5 8640U

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CPU comparison with benchmarks


Intel Pentium Gold 6405U CPU1 vs CPU2 AMD Ryzen 5 8640U
Intel Pentium Gold 6405U AMD Ryzen 5 8640U

CPU comparison

In this CPU comparison, we compare the Intel Pentium Gold 6405U and the AMD Ryzen 5 8640U and use benchmarks to check which processor is faster.

We compare the Intel Pentium Gold 6405U 2 core processor released in Q4/2019 with the AMD Ryzen 5 8640U which has 6 CPU cores and was introduced in Q1/2024.
Intel Pentium (150) Family AMD Ryzen 5 (86)
Intel Pentium 6000 (1) CPU group AMD Ryzen 8040 (20)
10 Generation 7
Comet Lake U Architecture Hawk Point (Zen 4)
Mobile Segment Mobile
-- Predecessor AMD Ryzen 5 7640U
-- Successor --

CPU Cores and Base Frequency

The Intel Pentium Gold 6405U is a 2 core processor with a clock frequency of 2.40 GHz. The processor can compute 4 threads at the same time. The AMD Ryzen 5 8640U clocks with 3.50 GHz (4.90 GHz), has 6 CPU cores and can calculate 12 threads in parallel.

Intel Pentium Gold 6405U Characteristic AMD Ryzen 5 8640U
2 Cores 6
4 Threads 12
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
2.40 GHz Frequency 3.50 GHz
-- Turbo Frequency (1 Core) 4.90 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.

Intel Pentium Gold 6405U Characteristic AMD Ryzen 5 8640U
-- 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.

Intel UHD Graphics 610 GPU AMD Radeon 760M
0.30 GHz GPU frequency 0.80 GHz
0.95 GHz GPU (Turbo) 2.60 GHz
9.5 GPU Generation 10
14 nm Technology 4 nm
3 Max. displays 4
12 Compute units 8
96 Shader 512
No Hardware Raytracing Yes
No Frame Generation AMD FSR
32 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.

Intel UHD Graphics 610 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
No Codec AV1 Decode / Encode
Decode / Encode Codec AVC Decode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

Up to 64 GB of memory in a maximum of 2 memory channels is supported by the Intel Pentium Gold 6405U, while the AMD Ryzen 5 8640U supports a maximum of 256 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled.

Intel Pentium Gold 6405U Characteristic AMD Ryzen 5 8640U
LPDDR3-2133, DDR4-2400 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
64 GB Max. Memory 256 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
38.4 GB/s Max. Bandwidth 120.0 GB/s
No ECC Yes
-- L2 Cache 6.00 MB
2.00 MB L3 Cache 16.00 MB
2.0 PCIe version 4.0
12 PCIe lanes 20
6.0 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The Intel Pentium Gold 6405U has a TDP of 15 W. The TDP of the AMD Ryzen 5 8640U is 28 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Pentium Gold 6405U Characteristic AMD Ryzen 5 8640U
15 W TDP (PL1 / PBP) 28 W
-- TDP (PL2) --
-- TDP up 30 W
12.5 W TDP down 15 W
100 °C Tjunction max. 100 °C

Technical details

The Intel Pentium Gold 6405U has 2.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 5 8640U is at 22.00 MB. The processor is manufactured in 4 nm.

Intel Pentium Gold 6405U Characteristic AMD Ryzen 5 8640U
14 nm Technology 4 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
BGA 1528 Socket FP8
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2019 Release date Q1/2024
193 $ Release price --
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Rate these processors

Here you can rate the Intel Pentium Gold 6405U to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
Here you can rate the AMD Ryzen 5 8640U to help other visitors make their purchasing decisions. The average rating is 4.0 stars (3 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
Intel Pentium Gold 6405U (32%)
AMD Ryzen 5 8640U (100%)
⌀ Multi core performance in 1 CPU benchmarks
Intel Pentium Gold 6405U (15%)
AMD Ryzen 5 8640U (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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
592 (32%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 4.90 GHz
1869 (100%)

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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
1340 (15%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
8853 (100%)

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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
Intel UHD Graphics 610 @ 0.95 GHz
182 (7%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 4.90 GHz
1552 (100%)

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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
10675 (100%)

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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 4.90 GHz
2340 (100%)

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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 GHz
9197 (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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
2329 (100%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
6C 12T @ 3.50 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.
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2.40 GHz
0 (0%)
AMD Ryzen 5 8640U AMD Ryzen 5 8640U
10,675 CB R23 MC @ 24 W
445 (100%)

Devices using this processor

Intel Pentium Gold 6405U AMD Ryzen 5 8640U
Lenovo Ideapad 3 17IML05 Unknown

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