MediaTek Helio X20 vs Intel Atom C3858

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CPU comparison with benchmarks


MediaTek Helio X20 CPU1 vs CPU2 Intel Atom C3858
MediaTek Helio X20 Intel Atom C3858

CPU comparison

MediaTek Helio X20 or Intel Atom C3858 - 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 MediaTek Helio X20 has 10 cores with 10 threads and clocks with a maximum frequency of 2.10 GHz. Up to 4 GB of memory is supported in 2 memory channels. The MediaTek Helio X20 was released in Q4/2015.

The Intel Atom C3858 has 12 cores with 12 threads and clocks with a maximum frequency of 2.00 GHz. The CPU supports up to 256 GB of memory in 2 memory channels. The Intel Atom C3858 was released in Q3/2017.
Mediatek Helio (37) Family Intel Atom (108)
MediaTek Helio X20 (4) CPU group Intel Atom C3000 (20)
2 Generation 5
Cortex-A72 / Cortex-A53 Architecture Denverton
Mobile Segment Desktop / Server
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The MediaTek Helio X20 has 10 CPU cores and can calculate 10 threads in parallel. The clock frequency of the MediaTek Helio X20 is 2.10 GHz while the Intel Atom C3858 has 12 CPU cores and 12 threads can calculate simultaneously. The clock frequency of the Intel Atom C3858 is at 2.00 GHz.

MediaTek Helio X20 Characteristic Intel Atom C3858
10 Cores 12
10 Threads 12
hybrid (Prime / big.LITTLE) Core architecture normal
No Hyperthreading No
No Overclocking ? No
2.10 GHz
2x Cortex-A72
A-Core 2.00 GHz
1.40 GHz
4x Cortex-A53
B-Core --
--
4x Cortex-A53
C-Core --

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.

MediaTek Helio X20 Characteristic Intel Atom C3858
-- AI hardware --
-- AI specifications --
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

The MediaTek Helio X20 or Intel Atom C3858 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.

ARM Mali-T880 MP4 GPU no iGPU
0.78 GHz GPU frequency --
0.78 GHz GPU (Turbo) --
Midgard 4 GPU Generation --
16 nm Technology
2 Max. displays
4 Compute units --
64 Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory --
11 DirectX Version --

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.

ARM Mali-T880 MP4 GPU no iGPU
Decode / Encode Codec h265 / HEVC (8 bit) No
Decode Codec h265 / HEVC (10 bit) No
Decode / Encode Codec h264 No
No Codec VP9 No
Decode / Encode Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
Decode / Encode Codec JPEG No

Memory & PCIe

The MediaTek Helio X20 can use up to 4 GB of memory in 2 memory channels. The maximum memory bandwidth is 6.4 GB/s. The Intel Atom C3858 supports up to 256 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 38.4 GB/s.

MediaTek Helio X20 Characteristic Intel Atom C3858
LPDDR3-800 Memory DDR4-2400
4 GB Max. Memory 256 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
6.4 GB/s Max. Bandwidth 38.4 GB/s
No ECC Yes
-- L2 Cache 12.00 MB
-- L3 Cache --
-- PCIe version 3.0
-- PCIe lanes 16
-- PCIe Bandwidth 15.8 GB/s

Thermal Management

The thermal design power (TDP for short) of the MediaTek Helio X20 is --, while the Intel Atom C3858 has a TDP of 25 W. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

MediaTek Helio X20 Characteristic Intel Atom C3858
-- TDP (PL1 / PBP) 25 W
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. 100 °C

Technical details

The MediaTek Helio X20 is manufactured in 20 nm and has 0.00 MB cache. The Intel Atom C3858 is manufactured in 14 nm and has a 12.00 MB cache.

MediaTek Helio X20 Characteristic Intel Atom C3858
20 nm Technology 14 nm
Chiplet Chip design Monolithic
Armv8-A (64 bit) Instruction set (ISA) x86-64 (64 bit)
-- ISA extensions SSE4.1, SSE4.2
-- Socket BGA 1310
None Virtualization VT-x, VT-x EPT, VT-d
No AES-NI Yes
Android Operating systems Windows 10, Linux
Q4/2015 Release date Q3/2017
-- Release price 332 $
show more data show more data


Rate these processors

Here you can rate the MediaTek Helio X20 to help other visitors make their purchasing decisions. The average rating is 1.0 stars (1 ratings). Rate now:
Here you can rate the Intel Atom C3858 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


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.
MediaTek Helio X20 MediaTek Helio X20
10C 10T @ 2.10 GHz
203 (100%)
Intel Atom C3858 Intel Atom C3858
12C 12T @ 2.00 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.
MediaTek Helio X20 MediaTek Helio X20
10C 10T @ 2.10 GHz
1153 (100%)
Intel Atom C3858 Intel Atom C3858
12C 12T @ 2.00 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.
MediaTek Helio X20 MediaTek Helio X20
10C 10T @ 2.10 GHz
240 (100%)
Intel Atom C3858 Intel Atom C3858
12C 12T @ 2.00 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.
MediaTek Helio X20 MediaTek Helio X20
10C 10T @ 2.10 GHz
958 (100%)
Intel Atom C3858 Intel Atom C3858
12C 12T @ 2.00 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.
MediaTek Helio X20 MediaTek Helio X20
ARM Mali-T880 MP4 @ 0.78 GHz
106 (100%)
Intel Atom C3858 Intel Atom C3858
@ 0.00 GHz
0 (0%)

AnTuTu 8 Benchmark

The AnTuTu 8 Benchmark measures the performance of a SoC. AnTuTu benchmarks the CPU, GPU, Memory as well as the UX (User Experience) by simulating browser and app usage. AnTuTu can benchmark any ARM CPU that runs under Android or iOS. Devices may not be directly compareable if the benchmark has been performed under different operating systems.

In the AnTuTu 8 benchmark, the single-core performance of a processor is only slightly weighted. The evaluation consists of the multi-core performance of the processor, the speed of the RAM and the performance of the internal graphics.
MediaTek Helio X20 MediaTek Helio X20
10C 10T @ 2.10 GHz
84536 (100%)
Intel Atom C3858 Intel Atom C3858
12C 12T @ 2.00 GHz
0 (0%)

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.
MediaTek Helio X20 MediaTek Helio X20
10C 10T @ 2.10 GHz
1729 (100%)
Intel Atom C3858 Intel Atom C3858
12C 12T @ 2.00 GHz
0 (0%)

Devices using this processor

MediaTek Helio X20 Intel Atom C3858
Unknown Unknown

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