The Microsoft Xbox Series X|S are ninth generation home video game consoles released on November 10, 2020, as the fourth-generation Xbox, succeeding the Xbox One. As with the Xbox One line, the consoles use an AMD CPU and GPU. Both models have solid-state drives to reduce loading times, support for hardware-accelerated ray-tracing and spatial audio, the ability to convert games to high-dynamic-range rendering using machine learning (Auto HDR), support for HDMI 2.1 variable refresh rate and low-latency modes. Xbox Series X can render games in 2160p (4K resolution) at 60 frames per second (FPS). The lower-end, digital-only Xbox Series S, which has reduced specs, no optical drive, and can render games in 1440p at 120 FPS. Xbox Series X|S are backwards-compatible with nearly all Xbox One-compatible games (including Xbox 360 and original Xbox games that were backward-compatible with Xbox One.