Intel Core i3-8121U vs AMD A6-5400B

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CPU comparison with benchmarks


Intel Core i3-8121U CPU1 vs CPU2 AMD A6-5400B
Intel Core i3-8121U AMD A6-5400B

CPU comparison

In this CPU comparison, we compare the Intel Core i3-8121U and the AMD A6-5400B and use benchmarks to check which processor is faster.

We compare the Intel Core i3-8121U 2 core processor released in Q2/2018 with the AMD A6-5400B which has 2 CPU cores and was introduced in Q3/2012.
Intel Core i3 (202) Family AMD A (112)
Intel Core i 8000U (1) CPU group AMD A6-5000 (3)
8 Generation 4
Cannon Lake U Architecture Kabini (Jaguar)
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core i3-8121U is a 2 core processor with a clock frequency of 2.20 GHz (3.20 GHz). The processor can compute 4 threads at the same time. The AMD A6-5400B clocks with 3.60 GHz (3.80 GHz), has 2 CPU cores and can calculate 2 threads in parallel.

Intel Core i3-8121U Characteristic AMD A6-5400B
2 Cores 2
4 Threads 2
normal Core architecture normal
Yes Hyperthreading No
No Overclocking ? No
2.20 GHz Frequency 3.60 GHz
3.20 GHz Turbo Frequency (1 Core) 3.80 GHz
2.70 GHz Turbo Frequency (All Cores) 3.80 GHz

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 Core i3-8121U Characteristic AMD A6-5400B
-- 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 HD 7540D
GPU frequency 0.64 GHz
-- GPU (Turbo) --
-- GPU Generation 4
Technology 32 nm
Max. displays 2
-- Compute units 3
-- Shader 192
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 11

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 HD 7540D
No Codec h265 / HEVC (8 bit) No
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC Decode
No Codec VC-1 Decode
No Codec JPEG Decode / Encode

Memory & PCIe

Up to 32 GB of memory in a maximum of 2 memory channels is supported by the Intel Core i3-8121U, while the AMD A6-5400B supports a maximum of GB of memory with a maximum memory bandwidth of -- enabled.

Intel Core i3-8121U Characteristic AMD A6-5400B
, DDR4-2400 Memory DDR3-1866
32 GB Max. Memory
2 (Dual Channel) Memory channels 2 (Dual Channel)
38.4 GB/s Max. Bandwidth --
No ECC No
-- L2 Cache --
4.00 MB L3 Cache 1.00 MB
3.0 PCIe version --
16 PCIe lanes --
15.8 GB/s PCIe Bandwidth --

Thermal Management

The Intel Core i3-8121U has a TDP of 15 W. The TDP of the AMD A6-5400B is 65 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core i3-8121U Characteristic AMD A6-5400B
15 W TDP (PL1 / PBP) 65 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
105 °C Tjunction max. --

Technical details

The Intel Core i3-8121U has 4.00 MB cache and is manufactured in 10 nm. The cache of AMD A6-5400B is at 1.00 MB. The processor is manufactured in 28 nm.

Intel Core i3-8121U Characteristic AMD A6-5400B
10 nm Technology 28 nm
Monolithic Chip design Unknown
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2, AVX-512 ISA extensions SSE4a, SSE4.1, SSE4.2, AVX
BGA 1356 Socket FM2
VT-x, VT-x EPT, VT-d Virtualization AMD-V
Yes AES-NI Yes
Windows 10, Windows 11, Linux Operating systems
Q2/2018 Release date Q3/2012
-- Release price --
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Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
⌀ Multi core performance in 2 CPU benchmarks

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 Core i3-8121U Intel Core i3-8121U
2C 4T @ 3.20 GHz
810 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 GHz
431 (53%)

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 Core i3-8121U Intel Core i3-8121U
2C 4T @ 2.70 GHz
1987 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 GHz
689 (35%)

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 Core i3-8121U Intel Core i3-8121U
2C 4T @ 2.70 GHz
4395 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 GHz
1906 (43%)

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 Core i3-8121U Intel Core i3-8121U
2C 4T @ 3.20 GHz
1114 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 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.
Intel Core i3-8121U Intel Core i3-8121U
2C 4T @ 2.70 GHz
2414 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 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.
Intel Core i3-8121U Intel Core i3-8121U
@ 0.00 GHz
0 (0%)
AMD A6-5400B AMD A6-5400B
AMD Radeon HD 7540D @ 0.64 GHz
246 (100%)

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.
Intel Core i3-8121U Intel Core i3-8121U
2C 4T @ 3.20 GHz
139 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 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.
Intel Core i3-8121U Intel Core i3-8121U
2C 4T @ 2.70 GHz
305 (100%)
AMD A6-5400B AMD A6-5400B
2C 2T @ 3.80 GHz
0 (0%)

Devices using this processor

Intel Core i3-8121U AMD A6-5400B
Unknown Unknown

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