Developer is aiming for 30 Hz performance on Intel Panther Lake NPUs but the current version of this research driver is only achieving 2 to 3 Hz.
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The reasoning behind the development of this driver may strike a chord with those observing the 2020s processor landscape. “Every new laptop ships an NPU that sits idle while the GPU composes the desktop, runs the browser and, increasingly, runs local models,” notes the npu-driver readme file. “The question this project asks is narrow and testable: can the NPU take over desktop composition, end-to-end, without the applications or the compositor knowing?”
Thankfully, the answer to the question about whether the NPU can render the Windows 11 desktop – and apps like Notepad and Edge windows – is a yes. The npu-driver functions as intended and as demonstrated. Moreover, it seamlessly switches back to GPU rendering if/when it needs to.
The developer admits that this driver is strictly “a research prototype, not a product” at this stage, and the main issue currently is performance. The GitHub readme notes that the target 30 Hz performance isn’t very close right now, with actual screen refresh speeds of around 2 to 3 Hz. npu-driver is being developed on a Panther Lake laptop , and all these Intel processors feature NPU 5 architecture silicon with performance spanning 45-50 TOPS.
A Reddit post that appears to be penned by one of the labscommunity crew says that this project might render Windows 11 visuals rather slowly, but it can “bring 3D GPU usage down from 3.4% to 0.6%,” thus freeing up the GPU for other tasks, like inference .
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Reference reading
- https://www.tomshardware.com/pc-components/gpu-drivers/SPONSORED_LINK_URL
- https://www.tomshardware.com/pc-components/gpu-drivers/open-source-project-renders-your-windows-11-desktop-using-the-npu-rather-than-the-gpu-npu-driver-can-only-run-at-2-to-3-hz-targets-30-hz-performance#main
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