AMD A4-3420 vs Intel Pentium Gold 6405U

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CPU comparison with benchmarks


AMD A4-3420 CPU1 vs CPU2 Intel Pentium Gold 6405U
AMD A4-3420 Intel Pentium Gold 6405U

CPU comparison

AMD A4-3420 or Intel Pentium Gold 6405U - 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 A4-3420 has 2 cores with 2 threads and clocks with a maximum frequency of 2.80 GHz. Up to GB of memory is supported in 2 memory channels. The AMD A4-3420 was released in Q4/2011.

The Intel Pentium Gold 6405U has 2 cores with 4 threads and clocks with a maximum frequency of 2.40 GHz. The CPU supports up to 64 GB of memory in 2 memory channels. The Intel Pentium Gold 6405U was released in Q4/2019.
AMD A (112) Family Intel Pentium (150)
AMD A4-3000 (3) CPU group Intel Pentium 6000 (1)
1 Generation 10
Llano (K10) Architecture Comet Lake U
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD A4-3420 is a 2 core processor with a clock frequency of 2.80 GHz. The Intel Pentium Gold 6405U has 2 CPU cores with a clock frequency of 2.40 GHz.

AMD A4-3420 Characteristic Intel Pentium Gold 6405U
2 Cores 2
2 Threads 4
normal Core architecture normal
No Hyperthreading Yes
Yes Overclocking ? No
2.80 GHz Frequency 2.40 GHz
-- Turbo Frequency (1 Core) --
-- Turbo Frequency (All Cores) --

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

AMD A4-3420 Characteristic Intel Pentium Gold 6405U
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The integrated graphics unit of a processor is not only responsible for the pure image output on the system, but can also significantly increase the efficiency of the system with the support of modern video codecs.

AMD Radeon HD 6410D GPU Intel UHD Graphics 610
0.60 GHz GPU frequency 0.30 GHz
-- GPU (Turbo) 0.95 GHz
3 GPU Generation 9.5
32 nm Technology 14 nm
2 Max. displays 3
2 Compute units 12
160 Shader 96
No Hardware Raytracing No
No Frame Generation No
1 GB Max. GPU Memory 32 GB
11 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 HD 6410D GPU Intel UHD Graphics 610
No Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode / Encode
Decode Codec h264 Decode / Encode
No Codec VP9 Decode / Encode
No Codec VP8 Decode / Encode
No Codec AV1 No
Decode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

The AMD A4-3420 supports a maximum of GB of memory in 2 memory channels. The Intel Pentium Gold 6405U can connect up to 64 GB of memory in 2 memory channels.

AMD A4-3420 Characteristic Intel Pentium Gold 6405U
DDR3-1600 Memory LPDDR3-2133, DDR4-2400
Max. Memory 64 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 38.4 GB/s
No ECC No
-- L2 Cache --
1.00 MB L3 Cache 2.00 MB
-- PCIe version 2.0
-- PCIe lanes 12
-- PCIe Bandwidth 6.0 GB/s

Thermal Management

The TDP (Thermal Design Power) of a processor specifies the required cooling solution. The AMD A4-3420 has a TDP of 65 W, that of the Intel Pentium Gold 6405U is 15 W.

AMD A4-3420 Characteristic Intel Pentium Gold 6405U
65 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
-- TDP up --
-- TDP down 12.5 W
-- Tjunction max. 100 °C

Technical details

The AMD A4-3420 has a 1.00 MB cache, while the Intel Pentium Gold 6405U cache has a total of 2.00 MB.

AMD A4-3420 Characteristic Intel Pentium Gold 6405U
32 nm Technology 14 nm
Unknown Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE3, SSE4a ISA extensions SSE4.1, SSE4.2
FM1 Socket BGA 1528
AMD-V Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Windows 10, Linux Operating systems Windows 10, Windows 11, Linux
Q4/2011 Release date Q4/2019
-- Release price 193 $
show more data show more data


Rate these processors

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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:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
AMD A4-3420 (59%)
Intel Pentium Gold 6405U (100%)
⌀ Multi core performance in 2 CPU benchmarks
AMD A4-3420 (61%)
Intel Pentium Gold 6405U (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 A4-3420 AMD A4-3420
2C 2T @ 2.80 GHz
348 (59%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
592 (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.
AMD A4-3420 AMD A4-3420
2C 2T @ 2.80 GHz
621 (46%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
1340 (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.
AMD A4-3420 AMD A4-3420
AMD Radeon HD 6410D @ 0.60 GHz
192 (100%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
Intel UHD Graphics 610 @ 0.95 GHz
182 (95%)

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 A4-3420 AMD A4-3420
2C 2T @ 2.80 GHz
1768 (76%)
Intel Pentium Gold 6405U Intel Pentium Gold 6405U
2C 4T @ 2.40 GHz
2329 (100%)

Devices using this processor

AMD A4-3420 Intel Pentium Gold 6405U
Unknown Lenovo Ideapad 3 17IML05

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