TV Box

Amlogic S905X4 vs Amlogic S905X3: New DV8957 and DV8919 TV Box


Amlogic S905X4 is another successor to the already popular Amlogic S905X3 chipset. What features has S905X4 SoC, what are the differences between S905X3 SoC and S905X4 SoC you will find below. By the way, you can get acquainted with the new Android TV Boxes based on S905X4 SoC, prepared by SDMC manufacturer. Exactly SDMC DV8957 and SDMC DV8919.

Amlogic S905X4

Amlogic S905X4 SoC Overview Features

S905X4 chipset is an advanced application processor with support for the royalty-free AV1 video codec, specially designed for OTT/IPTV/Hybrid Set-Top Box (STB) and high-end media box applications. Amlogic S905X4 integrates a powerful CPU/GPU subsystem, a secured 4K video codec engine, and an HDR image processing pipeline with all major peripherals to form the ultimate low power multimedia AP.


Features that can be found in S905X4 SoC:

  • 2GHz 64-bit quad-core ARM® Cortex™ A55 CPU
  • Supports OpenGL ES3.2, Vulkan1.1, and OpenCL2.0 
  • AV1 video codec up to [email protected]
  • VAD, ASRC/EQ/DRC, 2xHiFi4 Acoustic/Audio DSP

As you will see in the table below both Amlogic’s SoCs are powerful chipsets featuring four Arm Cortex-A55 cores that have 15% to 20% performance improvement and simultaneously lower power consumption when using Android apps, navigating the UI and other day-to-day tasks than Cortex A53. 

Amlogic S905X3 vs S905X4

SoC S905X3 S905X4
Technology 12nm 12nm
CPU Quad-Core Cortex-A55 Quad-Core Cortex-A55
Up to 19700+ DMIPS Up to 21800+ DMIPS
GPU ARM Mali-G31 MP2                     ARM Mali-G31 MP2
OpenGL ES 3.2 OpenGL ES 3.2
Vulkan 1.0, OpenCL Vulkan 1.1OpenCL
2 2
CAS VMX, Widevine CAS,Irdeto MSR 3.2 VMX, Widevine CAS,Nagra NOCS3.2,Irdeto MSR3.2
DRM Widevine, Playready, VMX Widevine, Playready, VMX
Neural Network 1.2 TOPS CNN and 8X RNN
inference accelerator (optional)
Memory 32-bit DDR3/3L/4, LPDDR3/4, Up to 4GB, DDR3200 32-bit DDR3/3L/4, LPDDR3/4, Up to 4GB, DDR3200
Storage eMMC 5.0, NAND Flash, SPI NOR/NAND, SD eMMC 5.0, NAND Flash, SPI NOR/NAND, SD
Video Decoder 4Kp75 10bit: H.265/VP9 P-2/AVS2 4Kp120 10bit: AV1
4Kp30: H.264 4Kp75 10bit: H.265/VP9 P-2/AVS2
4Kp30: H.264
HDR/WCG HDR10/10+, HLG, Dolby Vision, TCH PRIME HDR10/10+, HLG, Dolby Vision, TCH PRIME
BT.709/2020/2100 BT.709/2020/2100
Video Encoder 1080p60 H.265/H.264 1080p60 H.265/H.264
Ethernet 10/100/1000 MAC + 10/100 PHY 10/100/1000 MAC + 10/100 PHY
USB/PCI-e 1x USB 2.0 + USB 3.0 / (PCIe Gen-2+USB2.0) 1x USB 2.0 + USB 3.0 / (PCIe Gen-2+USB2.0)
Voice & Audio Processing VAD, ASRC/EQ/DRC VAD, ASRC/EQ/DRC,
2xHiFi4 Acoustic/Audio DSP
Audio In/Out Stereo DACs, SPDIF-in & out, Stereo DACs, SPDIF-in & out,
8Ch PDM, 12+Ch I2S in, 12+ch I2S out 8Ch PDM, 12+Ch I2S in, 12+Ch I2S out
Video Output 4Kp60 HDMI 2.1, HDCP2.2, CVBS Kp60 HDMI 2.1, HDCP2.3CVBS
DVB 2x TS in, ISO7816 2x TS in, ISO7816

As you can see, there is not much difference between Amlogic S905X3 and S905X4 in terms of the TV box performance. Which one you should choose? It depends on your requirements and budget. 

S905X4 and AV1 Video Codecs

As you noticed in the table for S905X4 there is an information that supports 4Kp120 10bit: AV1 codec. AV1 video codecs that are said to be capable of boosting video efficiency by 20% or more than HEVC, and saving 30% more bandwidth efficiency compared to H.265 or VP9. Currently, the AV1 technology already has the support of many streaming services, including Netflix, Amazon Prime Video and YouTube. 

SDMC DV8957 and SDMC DV8919 new TV Boxes with S905X4 SoC

As we mentioned, SDMC company (Shenzhen SDMC Technology Co., Ltd.) has prepared two OTT Boxes. SDMC comapny is one of the well-known TV Box manufacturers, but not only. SDMC also is a provider of dedicated solutions for cable operators and content aggregators to expand their business in the filed of domestic and overseas telecom, broadcasting, hotel, hospital, school, residential and other industries etc. Below more details

SDMC DV8957 has integrated the AV1 open-source codec, which is said to reduce 4K bandwidth requirements by around 20% in comparison to current proprietary HEVC devices. The Andriod TV box also features WiFi 6, and runs Android TV 10.0 OS. TV Box also supports 4K Ultra HD resolution, along with HDR 10, HDR10+ and Dolby Vision. Contact SDMC for more.

SDMC DV8919 specifications:

  • SoC – Amlogic S905X4 quad-core Arm Cortex-A55 processor @ up to 2.0 GHz with Arm Mali-G31MP2 supporting OpenGL ES3.2, Vulkan 1.1 and OpenCL 2.0
  • SMemory – 2GB DDR memory (options: 1GB or 4GB)
  • Storage – 8GB eMMC flash (options: 16GB, 32GB, 64GB), MicroSD card slot
  • Video
    • Output – HDMI 2.1 up to 4K @ 60+Hz with CEC & HDCP2.2, AV output with composite video
    • Input – HMDI input (TBC)
  • Audio – Analog stereo audio via AV output, digital audio via HDMI, and optical S/PDIF
  • Video Playback
    • Codecs
      • AV1 up to 4K @ 120 fps
      • H.265 HEVC MP-10 up to 4K @ 75fps
      • VP9 up to 4K @ 75fps
      • AVS2-P2 up to 4K @ 75fps
      • H.264 AVC up to 4K @ 30fps
      • MPEG1/2/4 ASP, WMV/VC-1, RealVideo8/9/10,
    • HDR – HDR 10, HLG, PRIME HDR, TCH PRIME, options HDR10+, optional Dolby Vision
    • DRM – Google Widevine & Microsoft PlayReady; options: Verimatrix, Irdeto MSR2.2, Nagra TKL
  • Connectivity – 10/100M Ethernet (optional Gigabit Ethernet), Wi-Fi 5 802.11 a/b/g/n/ac MiMO, Bluetooth 4.2
  • USB – 1x USB 3.0 port, 1x USB 2.0 port
  • Misc – Power button; Power, IR & Network LEDs; IR receiver
  • Power Supply – 5V/2A via DC jack
  • Dimensions – 120 x 120 x 28mm

More on the product page.


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