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Xbox One X features upgraded hardware, designed primarily to render games at 4K resolution and to provide performance improvements for existing games; they can be displayed at full resolution on 4K displays or supersampled for lower-resolution displays. It uses a system-on-chip (SoC) known as Scorpio Engine, which incorporates a 2.3 GHz octa-core CPU, and a Radeon GPU with 40 Compute Units clocked at 1172 MHz, generating 6 teraflops of graphical computing performance. It also includes 12 GB of GDDR5 RAM with 9 GB allocated to games. Scorpio Engine's CPU utilizes a custom platform designed to maintain compatibility with the Jaguar CPU of the original Xbox One, but with a 31% increase in performance; the custom platform is unrelated to AMD's current Ryzen architecture. The console uses a vapor-chamber method of cooling for the SoC, and motherboards tailored to the exact voltage needs of each individual Scorpio SoC to optimize their output and energy usage. The console also supports AMD's FreeSync technology, 1440p resolution, and/or 120 Hz refresh rate on compatible displays.
Xbox One X is compatible with all existing Xbox One software and accessories, including the Xbox and Xbox 360 games that have been made backward-compatible. To assist in optimizing the new hardware to run existing games at 4K resolution, Microsoft developers used internal debugging software to collect GPU traces from major titles that did not run at full 1080p resolution on the original Xbox One.
Games marketed by Microsoft as Xbox One X Enhanced have specific optimizations for graphical fidelity on the console's hardware. Separate iconography denotes games that natively run at 4K resolution, or support HDR. Existing games can be updated to provide these enhancements.
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