AMD RX-421BD vs MediaTek Helio P23

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CPU comparison with benchmarks


AMD RX-421BD CPU1 vs CPU2 MediaTek Helio P23
AMD RX-421BD MediaTek Helio P23

CPU comparison

AMD RX-421BD or MediaTek Helio P23 - 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 RX-421BD has 4 cores with 4 threads and clocks with a maximum frequency of 3.40 GHz. Up to GB of memory is supported in 2 memory channels. The AMD RX-421BD was released in Q4/2015.

The MediaTek Helio P23 has 8 cores with 8 threads and clocks with a maximum frequency of 2.50 GHz. The CPU supports up to 6 GB of memory in 2 memory channels. The MediaTek Helio P23 was released in Q3/2017.
AMD R (6) Family Mediatek Helio (37)
AMD RX 1st Gen. (6) CPU group MediaTek Helio P20/P30 (4)
1 Generation 2
Merlin Falcon (Excavator) Architecture Cortex-A53
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD RX-421BD has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD RX-421BD is 2.10 GHz (3.40 GHz) while the MediaTek Helio P23 has 8 CPU cores and 8 threads can calculate simultaneously. The clock frequency of the MediaTek Helio P23 is at 2.50 GHz.

AMD RX-421BD Characteristic MediaTek Helio P23
4 Cores 8
4 Threads 8
normal Core architecture hybrid (big.LITTLE)
No Hyperthreading No
No Overclocking ? No
2.10 GHz (3.40 GHz) A-Core 2.50 GHz
4x Cortex-A53
-- B-Core 1.65 GHz
4x Cortex-A53

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 RX-421BD Characteristic MediaTek Helio P23
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD RX-421BD or MediaTek Helio P23 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 R7 - 512 (Merlin Falcon) GPU ARM Mali-G71 MP2
0.80 GHz GPU frequency 0.77 GHz
-- GPU (Turbo) --
3 GPU Generation Bifrost 1
28 Technology 16 nm
3 Max. displays 1
8 Compute units 2
512 Shader 32
No Hardware Raytracing No
No Frame Generation No
2 GB Max. GPU Memory 2 GB
12 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.

AMD Radeon R7 - 512 (Merlin Falcon) GPU ARM Mali-G71 MP2
Decode Codec h265 / HEVC (8 bit) Decode / Encode
No Codec h265 / HEVC (10 bit) Decode
Decode / Encode Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 Decode / Encode
No Codec AV1 No
No Codec AVC Decode / Encode
No Codec VC-1 No
Decode Codec JPEG Decode / Encode

Memory & PCIe

The AMD RX-421BD can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 38.4 GB/s. The MediaTek Helio P23 supports up to 6 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 12.8 GB/s.

AMD RX-421BD Characteristic MediaTek Helio P23
DDR4-2400, DDR3-2133 Memory LPDDR4X-1600, LPDDR3-933
Max. Memory 6 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
38.4 GB/s Max. Bandwidth 12.8 GB/s
Yes ECC No
2.00 MB L2 Cache --
-- L3 Cache --
3.0 PCIe version --
12 PCIe lanes --
11.8 GB/s PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD RX-421BD is 35 W, while the MediaTek Helio P23 has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD RX-421BD Characteristic MediaTek Helio P23
35 W TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
12 W TDP down --
90 °C Tjunction max. --

Technical details

The AMD RX-421BD is manufactured in 28 nm and has 2.00 MB cache. The MediaTek Helio P23 is manufactured in 16 nm and has a 0.00 MB cache.

AMD RX-421BD Characteristic MediaTek Helio P23
28 nm Technology 16 nm
Unknown Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE4a, SSE4.1, SSE4.2, AVX, FMA3, FMA4 ISA extensions --
FP4 Socket --
AMD-V, AMD-Vt Virtualization None
Yes AES-NI No
Operating systems Android
Q4/2015 Release date Q3/2017
-- Release price --
show more data show more data


Rate these processors

Here you can rate the AMD RX-421BD to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the MediaTek Helio P23 to help other visitors make their purchasing decisions. The average rating is 5.0 stars (1 ratings). Rate now:


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 RX-421BD AMD RX-421BD
AMD Radeon R7 - 512 (Merlin Falcon) @ 0.80 GHz
820 (100%)
MediaTek Helio P23 MediaTek Helio P23
ARM Mali-G71 MP2 @ 0.77 GHz
53 (6%)

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 RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
152 (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 RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
859 (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.
AMD RX-421BD AMD RX-421BD
4C 4T @ 3.40 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
171 (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 RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
705 (100%)

AnTuTu 9 Benchmark

The AnTuTu 9 benchmark is very well suited to measuring the performance of a smartphone. AnTuTu 9 is quite heavy on 3D graphics and can now also use the "Metal" graphics interface. In AnTuTu, memory and UX (user experience) are also tested by simulating browser and app usage. AnTuTu version 9 can compare any ARM CPU running on Android or iOS. Devices may not be directly comparable when benchmarked on different operating systems.

In the AnTuTu 9 benchmark, the single-core performance of a processor is only slightly weighted. The rating is made up of the multi-core performance of the processor, the speed of the working memory, and the performance of the internal graphics.
AMD RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
112467 (100%)

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.
AMD RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
102549 (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.
AMD RX-421BD AMD RX-421BD
4C 4T @ 2.10 GHz
0 (0%)
MediaTek Helio P23 MediaTek Helio P23
8C 8T @ 2.50 GHz
1543 (100%)

Devices using this processor

AMD RX-421BD MediaTek Helio P23
Unknown Unknown

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