S905Y4 is the latest android tv box chip released by Amlogic in 2021. The biggest highlight is the addition of [email protected] 60pfs decoding support.S905Y4 uses Arm Cotex-A35 quad-core CPU, compared with S905X3 Cotex-A55 quad-core CPU, under the same performance, it can save up to 30% of power consumption. But it does not mean that S905Y4 is equal to S905X3 in maximum performance, but is lower than S905X3.
What is AV1 Decoding?
AV1 is an open source, royalty-free video encoding format from the Open Media Alliance (AOM) led by Google. Compared with the current H.265 (HEVC) coding, not only can the resolution, frame rate, and bit rate of the original video be maintained, but the video volume can be reduced by another 20%, and the compression rate is 30% higher than that of VP9. This means that higher-definition picture quality can be transmitted under the same bandwidth.S905Y4 has been added to the AV1 decoding library and supports [email protected] video decoding.
The difference between S905Y4 and S905X3
In addition to S905Y4 supporting AV1, what are the differences between S905Y4 and S905X3?We will tell from the following main performance indicators.
| SoC | S905Y4 | S905X3 | Note |
| CPU | Quad-Core Cortex-A35 2.5 DMIPS/MHz |
Quad-Core Cortex-A55 2.7 DMIPS/MHz |
PU performance S905X3>S905Y4, S905Y4 is the lowest in terms of power consumption, suitable for small boxes or Dongle |
| GPU | ARM Mali-G31 MP2 | ARM Mali-G31 MP2 | GPU Same |
| DRM | Widevine, Playready | Widevine, Playready | DRM Same |
| HDR | HDR10/10+, HLG, Dolby Vision | HDR10/10+, HLG, Dolby Vision | Same |
| Video Decoder | − VP9 Profile-2 up to [email protected] | − VP9 Profile-2 up to [email protected] | S905X3 [email protected] > S905Y4 [email protected] |
| − H.265 HEVC [email protected] up to [email protected] | − H.265 HEVC [email protected] up to [email protected] | S905X3 [email protected] > S905Y4 [email protected] | |
| − H.264 AVC [email protected] up to [email protected] | − H.264 AVC [email protected] up to [email protected] | Same | |
| − MPEG-4 [email protected] up to [email protected] (ISO-14496) | − MPEG-4 [email protected] up to [email protected] (ISO-14496) | Same | |
| − WMV/VC-1 SP/MP/AP up to [email protected] | − WMV/VC-1 SP/MP/AP up to [email protected] | Same | |
| − AVS-P16(AVS+) /AVS-P2 JiZhun Profile up to [email protected] | − AVS-P16(AVS+) /AVS-P2 JiZhun Profile up to [email protected] | Same | |
| − MPEG-2 MP/HL up to [email protected] (ISO-13818) | − MPEG-2 MP/HL up to [email protected] (ISO-13818) | Same | |
| − MPEG-1 MP/HL up to [email protected] (ISO-11172) | − MPEG-1 MP/HL up to [email protected] (ISO-11172) | Same | |
| − RealVideo 8/9/10 up to [email protected] | − RealVideo 8/9/10 up to [email protected] | ||
| − Multiple language and multiple format sub-title video support | − Multiple language and multiple format sub-title video support | Same | |
| − MJPEG and JPEG unlimited pixel resolution decoding (ISO/IEC-10918) | − MJPEG and JPEG unlimited pixel resolution decoding (ISO/IEC-10918) | Same | |
| − Supports JPEG thumbnail, scaling, rotation and transition effects | − Supports JPEG thumbnail, scaling, rotation and transition effects | Same | |
| − Supports *.mkv,*.wmv,*.mpg, *.mpeg, *.dat, *.avi, *.mov, *.iso, *.mp4, *.rm and *.jpg file | − Supports *.mkv,*.wmv,*.mpg, *.mpeg, *.dat, *.avi, *.mov, *.iso, *.mp4, *.rm and *.jpg file | Same | |
| AV1 [email protected] up to [email protected] | x | S905X3 Unsupport AV1 decoding | |
| Muti Decoder | [email protected] | [email protected] | Same, Support 4 videos decoding same time for [email protected] |
| DDR | Max 4GB | Max 4GB | Same |
Through comparison, we can find that if 8K decoding is not required, S905Y4 can fully meet the 4K decoding requirements. The difference between the two CPUs is not too great. Considering the cost performance and the future AV1 coding trend, it is better to consider S905Y4.
