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Amlogic S905X3 vs S905X4 Difference

At present, products using the Amlogic S905X4 chip solution are already on the market. Here is a simple comparison between S905X3 vs S905X4 to facilitate everyone’s choice. In general, S905X4 will run slightly faster. The default maximum frequency of the CPU can reach 2.0. The GPU part has not been changed. NPU support has been cancelled, HDCP2.3 version is supported, and dual-core HiFi4 audio DSP is integrated, and AV1 is supported. [email protected] decoding. This shows that Amlogic hopes that S905X4 will focus more on the performance of audio and video.

S905X3 VS s905x4

S905X3 vs S905X4 CPU

S905X4 and S905X3 also use the 12nm process, and the core architecture is also the same quad-core Cortex-A55, but the S905X4 is better than the integer computing power (DMIPS), which can reach 21800+. DMIPS will not be popularized here. We generally regard MIPS as the unit of performance indicators. The higher the better.

S905X3 Vs S905X4 GPU

In terms of GPU, S905X4 supports Vulkan1.1 standard, while S905X3 is 1.0 standard. The new features of Vulkan 1.1 include subset operations, which enables efficient data sharing and operation when multiple tasks are running simultaneously on a GPU. Vulkan 1.1 also enables applications to complete rendering and display operations through sources that they cannot obtain or copy, for safe playback and display of protected multimedia content. Of course, the extensions in Vulkan 1.0 have also been retained, including multi-picture viewing and simultaneous rendering, multiple GPUs used in a single system, commonly used for advanced rendering and editing operations in a wide range of references such as virtual reality, cross-process API interaction operations .

S905X3 Vs S905X4 Decoding

The biggest difference between S905X4 and S905X3 is in video decoding. S905X4 supports the latest 4K 120 10bit AV1 decoding. Compared with traditional video encoding, AV1 can bring better volume and picture quality advantages in 8K and other ultra-high-definition videos, which also means that devices equipped with S905X4 have huge advantages in decoding and playing 8K ultra-definition videos. Far from being comparable to Jingchen S905X3.
YouTube and Netflix have planned to require full use of AV1 decoding at some point in the future, and hardware manufacturers such as Intel, AMD, Nvidia, Samsung, and MediaTek have also joined the ranks of AV1 hardware decoder support.

S905Y4 AV1

In terms of audio processing, the Crystal Morning S905X4 adds support for the fourth-generation HiFi DSP based on the Crystal Morning S905X3. The fourth-generation HiFi DSP is a highly optimized audio/speech processor for efficient implementation of audio/speech codecs and pre- and post-processing modules as well as other demanding DSP functions in the wireless communication field. Compared with other audio DSPs, HiFi 4 DSP performs more than 2 times higher in computationally intensive functions such as fast Fourier transform and finite impulse response. At the same time, it is also compatible with the existing HiFi DSP series, providing more than 140 HIFI optimized audio/voice codecs and audio enhancement software packages.

In terms of video output, Crystal Morning S905X4 mainly improves security and supports HDCP 2.3 protocol, which can bring stronger protection for the transmission of new 8K ultra-high-definition program sources. At present, some high-end TVs have begun to adopt HDCP 2.3 protocol.


Summary: Judging from the comparative analysis of S905X4 vs S905X3, the improvement ofS905X4 is mainly manifested in the processing of audio and video. For the upcoming 8K ultra-high-definition era,  S905X4 is obviously more suitable than  S905X3 . Of course, the specific product performance also depends on the processing of downstream manufacturers, whether it can play 100% of the strength of  S905X4

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