Windows 11 Test Build Adds Smart Allocation for Unified Memory in Games and AI Apps

Windows 11 test build 29648.1000, released on August 17, 2026, includes a new feature called Smart Allocation that allows users to manually allocate unified memory to games and AI applications. The feature did not appear in Microsoft's update log, but the code contains options for reserving dedicated memory for accelerators, graphics processing, and AI.

Unified memory is used in systems without discrete graphics cards, such as Macs, certain laptops, and PC handhelds. The system automatically allocates memory based on task requirements, but Smart Allocation allows users to specify the memory division ratio, ensuring games and AI applications receive dedicated memory. The feature is particularly important on upcoming unified-memory devices such as NVIDIA's RTX Spark platform.

The NVIDIA RTX Spark platform offers up to 128GB of unified memory. Users can allocate large blocks of memory to graphics and AI tasks, giving the GPU access to more memory than the RTX 5090's 32GB of discrete VRAM. This shared memory pool is based on LPDDR5x, which is slower than GDDR7 but offers greater capacity.