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MediaTek Helio X20 |
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Designer | MediaTek, ARM Holdings |
Manufacturer | TSMC |
Model Number | Helio X20 |
Part Number | MT6797, MTK6797 |
Market | Mobile, Embedded |
Introduction | May 12, 2015 (announced) March 16, 2016 (launched) |
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Family | Helio |
Series | Helio X |
Frequency | 2,100 MHz, 1,850 MHz, 1,400 MHz |
Bus type | AMBA 4 AXI |
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ISA | ARMv8 (ARM) |
Microarchitecture | Cortex-A53, Cortex-A72 |
Core Name | Cortex-A53, Cortex-A72 |
Process | 20 nm |
Technology | CMOS |
Die | 100 mm² |
Word Size | 64 bit |
Cores | 10 |
Threads | 10 |
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Max SMP | 1-Way (Uniprocessor) |
Helio X20 (MT6797) is a 64-bit deca-core ARM LTE system on a chip designed by MediaTek and introduced in early 2016. This SoC incorporates 3 independent clusters of cores (called "Tri-Cluster" by MediaTek) operating at varying degrees of performance designed for certain workloads (operating at 1.4 GHz, 1.85 GHz, and 2.1 GHz) and supports up to 6 GiB of dual-channel LPDDR3-1866 memory. This SoC also incorporates a Mali-T800 MP4 IGP operating at 780 MHz. The chip has a modem supporting LTE User Equipment (UE) category 6.
The Helio X20 is identical to Helio X25 except for the lower clocked A72 cores and the lower clocked GPU.
Architecture
The Helio X20 is designed is composed of 3 individual clusters of CPU cores depending on the level of performance required by the active applications.
The three clusters are designed as a modified big.LITTLE configuration.
Architecture slide (note speeds changed since)
Cache
- Main articles: Cortex-A53 § Cache and Cortex-A72 § Cache
Memory controller
[Edit/Modify Memory Info]
![ram icons.svg](/w/images/thumb/a/af/ram_icons.svg/75px-ram_icons.svg.png) |
Integrated Memory Controller
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Max Type | LPDDR3-1600 |
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Supports ECC | No |
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Max Mem | 4 GiB |
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Controllers | 1 |
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Channels | 2 |
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Width | 32 bit |
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Max Bandwidth | 12.8 GB/s (11.92 GiB/s) "GB/s(11.92GiB/s)" is not declared as a valid unit of measurement for this property. |
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Bandwidth |
Single 6.4 GB/s (5.96 GiB/s) Double 12.8 GB/s (11.92 GiB/s)
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Expansions
Graphics
[Edit/Modify IGP Info]
![screen icon.svg](/w/images/thumb/2/29/screen_icon.svg/75px-screen_icon.svg.png) |
Integrated Graphics Information
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GPU | Mali-T880 |
Designer | ARM Holdings |
Execution Units | 4 |
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Frequency | 780 MHz 0.78 GHz 780,000 KHz
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Output | DSI |
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| Max Resolution | |
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| Standards | Direct3D | 11.2 |
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OpenGL | 3.2 | OpenCL | 1.2 | OpenGL ES | 3.2 | OpenVG | 1.1 | Vulkan | 1.0 |
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Wireless
Wireless Communications |
Wi-Fi |
WiFi | |
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Cellular |
2G | CSD | | Yes | GSM | | Yes | GPRS | | Yes | EDGE | | Yes |
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3G | UMTS | TD-SCDMA | Yes | DC-HSDPA | Yes | HSUPA | Yes | |
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CDMA2000 | |
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4G | |
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Image
- Integrated image signal processor supports 32 MP
- Supports image stabilization
- Supports video stabilization
- Supports noise reduction
- Supports lens shading correction
- Supports AE/AWB/AF
- Supports edge enhancement
- Supports face detection and visual tracking
- Hardware JPEG encoder
Video
- Video encoding 4K2K @ 30fps with H.265 and HDR
- Video decoding 4K2K @ 30fps, h.264, h.265 / HEVC, MPEG-1/2/4, VC-1, VP-8, VP-9
Audio
- Audio content sampling rates 8kHz to 192kHz
- Audio content sampling format 8-bit/16-bit/24-bit Mono/Stereo
- I2S, PCM
- Encode: AMR-NB, AMR-WB, AAC, OGG, ADPCM
- Decode: WAV, MP3, MP2, AAC, AMR-NB, AMR-WB, MIDI, Vorbis, APE, AAC-plus v1, AAC-plus v2, FLAC, WMA, ADPCM
- 7.1 channel MHL output
Utilizing devices
- Alcatel Flash (2017)
- Doogee F7
- Doogee F7 Pro
- Elephone R9
- Elephone S7
- HomTom HT10
- Kodak Ektra
- LeEco Le 2 Pro X620
- LeEco Le 2 X620
- Meizu MX6
- Sharp Z2
- Vernee Apollo Lite
- Xiaomi Redmi Note 4
- Xiaomi Redmi Pro
- Leagoo T10
Die
![mt6797 die.png](/w/images/thumb/6/68/mt6797_die.png/600px-mt6797_die.png)
Bibliography
- Mair, Hugh T., et al. "4.3 A 20nm 2.5 GHz ultra-low-power tri-cluster CPU subsystem with adaptive power allocation for optimal mobile SoC performance." Solid-State Circuits Conference (ISSCC), 2016 IEEE International. IEEE, 2016.