AMD A9-9420 vs Intel Celeron 3855U

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CPU comparison with benchmarks


AMD A9-9420 CPU1 vs CPU2 Intel Celeron 3855U
AMD A9-9420 Intel Celeron 3855U

CPU comparison

AMD A9-9420 or Intel Celeron 3855U - 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 A9-9420 has 2 cores with 2 threads and clocks with a maximum frequency of 3.60 GHz. Up to 8 GB of memory is supported in 1 memory channels. The AMD A9-9420 was released in Q2/2017.

The Intel Celeron 3855U has 2 cores with 2 threads and clocks with a maximum frequency of 1.60 GHz. The CPU supports up to 32 GB of memory in 2 memory channels. The Intel Celeron 3855U was released in Q4/2015.
AMD A (112) Family Intel Celeron (165)
AMD A9-9000 (4) CPU group Intel Celeron 3000 (10)
4 Generation 7
Stoney Ridge (Excavator) Architecture Kaby Lake U
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD A9-9420 has 2 CPU cores and can calculate 2 threads in parallel. The clock frequency of the AMD A9-9420 is 3.00 GHz (3.60 GHz) while the Intel Celeron 3855U has 2 CPU cores and 2 threads can calculate simultaneously. The clock frequency of the Intel Celeron 3855U is at 1.60 GHz.
AMD A9-9420 Characteristic Intel Celeron 3855U
2 Cores 2
2 Threads 2
normal Core architecture normal
No Hyperthreading No
No Overclocking ? No
3.00 GHz Frequency 1.60 GHz
3.60 GHz Turbo Frequency (1 Core) --
3.00 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 A9-9420 Characteristic Intel Celeron 3855U
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD A9-9420 or Intel Celeron 3855U 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 R5 (Stoney Ridge) GPU Intel HD Graphics 510
0.85 GHz GPU frequency 0.30 GHz
-- GPU (Turbo) 0.90 GHz
7 GPU Generation 9
28 nm Technology 14 nm
3 Max. displays 3
3 Compute units 12
192 Shader 96
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory 32 GB
12 DirectX Version 12.0

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 R5 (Stoney Ridge) GPU Intel HD Graphics 510
Decode Codec h265 / HEVC (8 bit) Decode / Encode
Decode Codec h265 / HEVC (10 bit) Decode
Decode Codec h264 Decode / Encode
Decode Codec VP9 Decode
Decode Codec VP8 Decode / Encode
No Codec AV1 No
Decode / Encode Codec AVC Decode / Encode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode

Memory & PCIe

The AMD A9-9420 can use up to 8 GB of memory in 1 memory channels. The maximum memory bandwidth is 17.1 GB/s. The Intel Celeron 3855U supports up to 32 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 34.1 GB/s.
AMD A9-9420 Characteristic Intel Celeron 3855U
DDR4-2133 Memory LPDDR3-1866, DDR4-2133, DDR3L-1600
8 GB Max. Memory 32 GB
1 (Single Channel) Memory channels 2 (Dual Channel)
17.1 GB/s Max. Bandwidth 34.1 GB/s
No ECC No
-- L2 Cache --
2.00 MB L3 Cache 2.00 MB
3.0 PCIe version 2.0
8 PCIe lanes 10
7.9 GB/s PCIe Bandwidth 5.0 GB/s

Thermal Management

The thermal design power (TDP for short) of the AMD A9-9420 is 15 W, while the Intel Celeron 3855U has a TDP of 15 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.
AMD A9-9420 Characteristic Intel Celeron 3855U
15 W TDP (PL1 / PBP) 15 W
-- TDP (PL2) --
25 W TDP up --
10 W TDP down 10 W
90 °C Tjunction max. 100 °C

Technical details

The AMD A9-9420 is manufactured in 28 nm and has 2.00 MB cache. The Intel Celeron 3855U is manufactured in 14 nm and has a 2.00 MB cache.
AMD A9-9420 Characteristic Intel Celeron 3855U
28 nm Technology 14 nm
Unknown Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 ISA extensions SSE4.1, SSE4.2
FP4 Socket --
AMD-V Virtualization VT-x, VT-x EPT, VT-d
Yes AES-NI Yes
Operating systems Windows 10, Linux
Q2/2017 Release date Q4/2015
-- Release price 107 $
show more data show more data


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Here you can rate the AMD A9-9420 to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:
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Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
AMD A9-9420 (100%)
Intel Celeron 3855U (86%)
⌀ Multi core performance in 3 CPU benchmarks
AMD A9-9420 (98%)
Intel Celeron 3855U (83%)

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 A9-9420 AMD A9-9420
2C 2T @ 3.60 GHz
497 (100%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
430 (87%)

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 A9-9420 AMD A9-9420
2C 2T @ 3.00 GHz
805 (95%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
848 (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 A9-9420 AMD A9-9420
AMD Radeon R5 (Stoney Ridge) @ 0.85 GHz
325 (100%)
Intel Celeron 3855U Intel Celeron 3855U
Intel HD Graphics 510 @ 0.90 GHz
173 (53%)

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 A9-9420 AMD A9-9420
2C 2T @ 3.00 GHz
2348 (100%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
1265 (54%)

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 A9-9420 AMD A9-9420
2C 2T @ 3.60 GHz
81 (100%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
68 (84%)

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 A9-9420 AMD A9-9420
2C 2T @ 3.00 GHz
134 (100%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
127 (95%)

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 A9-9420 AMD A9-9420
2C 2T @ 3.60 GHz
0 (0%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
361 (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.
AMD A9-9420 AMD A9-9420
2C 2T @ 3.00 GHz
0 (0%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
632 (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 A9-9420 AMD A9-9420
2C 2T @ 3.00 GHz
328 (100%)
Intel Celeron 3855U Intel Celeron 3855U
2C 2T @ 1.60 GHz
0 (0%)

Devices using this processor
AMD A9-9420 Intel Celeron 3855U
Unknown Unknown

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