AMD Phenom II X4 805 vs MediaTek Helio A20

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CPU comparison with benchmarks


AMD Phenom II X4 805 CPU1 vs CPU2 MediaTek Helio A20
AMD Phenom II X4 805 MediaTek Helio A20

CPU comparison

AMD Phenom II X4 805 or MediaTek Helio A20 - 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 Phenom II X4 805 has 4 cores with 4 threads and clocks with a maximum frequency of 2.50 GHz. Up to GB of memory is supported in 2 memory channels. The AMD Phenom II X4 805 was released in Q1/2009.

The MediaTek Helio A20 has 4 cores with 4 threads and clocks with a maximum frequency of 1.80 GHz. The CPU supports up to 3 GB of memory in 2 memory channels. The MediaTek Helio A20 was released in Q2/2020.
AMD Phenom II (52) Family Mediatek Helio (37)
AMD Phenom II - 800/900 (23) CPU group MediaTek Helio A20/A25 (2)
4 Generation 2
Deneb (K10) Architecture Cortex-A53 / Cortex-A53
Desktop / Server Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The AMD Phenom II X4 805 has 4 CPU cores and can calculate 4 threads in parallel. The clock frequency of the AMD Phenom II X4 805 is 2.50 GHz while the MediaTek Helio A20 has 4 CPU cores and 4 threads can calculate simultaneously. The clock frequency of the MediaTek Helio A20 is at 1.80 GHz.

AMD Phenom II X4 805 Characteristic MediaTek Helio A20
4 Cores 4
4 Threads 4
normal Core architecture normal
No Hyperthreading No
Yes Overclocking ? No
2.50 GHz Frequency 1.80 GHz
-- Turbo Frequency (1 Core) --
-- 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 Phenom II X4 805 Characteristic MediaTek Helio A20
-- AI hardware --
-- AI specifications --

Internal Graphics

The AMD Phenom II X4 805 or MediaTek Helio A20 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.

no iGPU GPU PowerVR GE8300
GPU frequency 0.55 GHz
-- GPU (Turbo) --
-- GPU Generation --
Technology 20 nm
Max. displays 1
-- Compute units 1
-- Shader --
No Hardware Raytracing No
No Frame Generation No
-- Max. GPU Memory 2 GB
-- DirectX Version 10

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 PowerVR GE8300
No Codec h265 / HEVC (8 bit) Decode
No Codec h265 / HEVC (10 bit) No
No Codec h264 Decode / Encode
No Codec VP9 No
No Codec VP8 No
No Codec AV1 No
No Codec AVC No
No Codec VC-1 No
No Codec JPEG No

Memory & PCIe

The AMD Phenom II X4 805 can use up to GB of memory in 2 memory channels. The maximum memory bandwidth is 21.3 GB/s. The MediaTek Helio A20 supports up to 3 GB of memory in 2 memory channels and achieves a memory bandwidth of up to 12.8 GB/s.

AMD Phenom II X4 805 Characteristic MediaTek Helio A20
DDR3-1333, DDR2-1066 Memory LPDDR4X-1600, LPDDR3-933
Max. Memory 3 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
21.3 GB/s Max. Bandwidth 12.8 GB/s
No ECC No
-- L2 Cache --
4.00 MB L3 Cache --
-- PCIe version --
-- PCIe lanes --
-- PCIe Bandwidth --

Thermal Management

The thermal design power (TDP for short) of the AMD Phenom II X4 805 is 95 W, while the MediaTek Helio A20 has a TDP of --. The TDP specifies the necessary cooling solution that is required to cool the processor sufficiently.

AMD Phenom II X4 805 Characteristic MediaTek Helio A20
95 W TDP (PL1 / PBP) --
-- TDP (PL2) --
-- TDP up --
-- TDP down --
-- Tjunction max. --

Technical details

The AMD Phenom II X4 805 is manufactured in 45 nm and has 4.00 MB cache. The MediaTek Helio A20 is manufactured in 12 nm and has a 0.00 MB cache.

AMD Phenom II X4 805 Characteristic MediaTek Helio A20
45 nm Technology 12 nm
Unknown Chip design Chiplet
x86-64 (64 bit) Instruction set (ISA) Armv8-A (64 bit)
SSE3, SSE4a ISA extensions --
AM3 Socket --
AMD-V Virtualization None
No AES-NI No
Windows 10, Linux Operating systems Android
Q1/2009 Release date Q2/2020
-- Release price --
show more data show more data


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Here you can rate the MediaTek Helio A20 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 1 CPU benchmarks
AMD Phenom II X4 805 (100%)
MediaTek Helio A20 (43%)
⌀ Multi core performance in 2 CPU benchmarks
AMD Phenom II X4 805 (100%)
MediaTek Helio A20 (41%)

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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
348 (100%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
148 (43%)

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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
1209 (100%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
522 (43%)

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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
1844 (100%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
714 (39%)

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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
0 (0%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
173 (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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
0 (0%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
476 (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 Phenom II X4 805 AMD Phenom II X4 805
@ 0.00 GHz
0 (0%)
MediaTek Helio A20 MediaTek Helio A20
PowerVR GE8300 @ 0.55 GHz
35 (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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
0 (0%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
90326 (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 Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
0 (0%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
79352 (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.
AMD Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
66 (100%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 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.
AMD Phenom II X4 805 AMD Phenom II X4 805
4C 4T @ 2.50 GHz
253 (100%)
MediaTek Helio A20 MediaTek Helio A20
4C 4T @ 1.80 GHz
0 (0%)

Devices using this processor

AMD Phenom II X4 805 MediaTek Helio A20
Unknown Unknown

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