GoKawiilWindows 11 Insider build adds toggle for Intel's unreleased APX chip feature
A Windows 11 Insider build (29295) spotted by Neowin includes a new 'Advanced Performance Extensions (APX)' setting, though no Intel chips currently support the feature. Intel first detailed APX in 2023, describing 32 general-purpose registers and new instruction formats meant to cut loads by 10% and stores by 20% versus its baseline Intel 64 architecture.
GoKawiil's interpretation of the reporting above, not reported fact.
The setting currently does nothing since no APX-capable processors exist yet, but its appearance suggests Microsoft is preparing Windows ahead of hardware availability. Intel's upcoming Nova Lake Core Ultra 400-series chips are expected to be the first with APX support, meaning developers will eventually need to recompile applications with specific flags to see any performance gains.
- A new APX toggle appeared in Windows 11 Insider build 29295, currently inactive since no compatible chips exist.
- Intel's APX, announced in 2023, doubles general-purpose registers and promises fewer loads and stores for better performance.
- Nova Lake Core Ultra 400-series chips are expected to be the first to support APX, though developers must recompile software to benefit.
Source: tomshardware.com — Oliver Haslam, 2026-10-27
Published there as: “Intel's APX offers 'better performance' in Windows 11 according to new Insider setting”
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