1, The full form of HVA is Hardware video acceleration

Hardware video acceleration makes it possible for the video card to decode/encode video, thus offloading the CPU and saving power.

Hardware acceleration refers to the process by which an application will offload certain computing tasks onto specialized hardware components within the system, enabling greater efficiency than is possible in software running on a general-purpose CPU alone.

Hardware acceleration combines the flexibility of general-purpose processors, such as CPUs, with the efficiency of fully customized hardware, such as GPUs and ASICs, increasing efficiency by orders of magnitude when any application is implemented higher up the hierarchy of digital computing systems. For example, visualization processes may be offloaded onto a graphics card in order to enable faster, higher-quality playback of videos and games, while also freeing up the CPU to perform other tasks.

There is a wide variety of dedicated hardware acceleration systems. One popular form is tethering hardware acceleration, which, when acting as a WiFi hotspot, will offload operations involving tethering onto a WiFi chip, reducing system workload and increasing energy efficiency. Hardware graphics acceleration, also known as GPU rendering, works server-side using buffer caching and modern graphics APIs to deliver interactive visualizations of high-cardinality data. AI hardware acceleration is designed for such applications as artificial neural networks, machine vision, and machine learning hardware acceleration, often found in the fields of robotics and the Internet of Things.

Systems often provide the option to enable or disable hardware acceleration. For instance, hardware acceleration is enabled by default in Google Chrome, but this capability can be turned off or relaunched in the system settings under “use hardware acceleration when available.” In order to determine if hardware acceleration is working properly, developers may perform a browser hardware acceleration test, which will detect any compatibility issues.