GPU power consumption

Windows 11 24H2 is expected to launch in September or October, featuring enhancements for both AMD and Intel PCs, including a new API to improve application performance. A key update is the introduction of WDDM 3.2 and a feature called "User-mode work submission," which allows applications to communicate more efficiently with the GPU, reducing latency and improving performance, particularly for graphics-intensive applications. This feature enables applications to send small tasks directly to the GPU, streamlining the process. Windows 11 24H2 also includes "GPU doorbells" to notify the GPU of new tasks, with two models: Global Doorbells and Dedicated Doorbells. The user-mode work submission feature works alongside Windows's engine state transition capabilities to manage GPU power consumption, allowing the GPU to switch between high-power and low-power modes based on task demands. Microsoft has already implemented user-mode work submissions on Copilot+ PCs with Snapdragon's integrated GPU, with broader availability expected for Intel, AMD, and Nvidia hardware in the upcoming update.