Windows 11 Adds APX Performance Toggle, Requiring Intel CPUs With 32 Registers
Updated
Updated · WindowsLatest · Oct 26
Windows 11 Adds APX Performance Toggle, Requiring Intel CPUs With 32 Registers
3 articles · Updated · WindowsLatest · Oct 26
Summary
Build 29695, released to Windows Insiders on Oct. 23, adds an Advanced Performance Extensions toggle that Microsoft says can deliver better performance on supported hardware.
Intel APX doubles general-purpose registers from 16 to 32, and prototype code compiled for it showed 10% fewer loads, more than 20% fewer stores, and 10% fewer instructions.
Nova Lake is the main upcoming consumer Intel family expected to support APX, while Alder Lake, Raptor Lake, Meteor Lake, Lunar Lake, Arrow Lake and Panther Lake cannot gain it through a Windows update.
Existing apps will not automatically speed up because developers may need to recompile software for APX, and Microsoft has not published Windows 11 benchmark results or a production rollout date.
Current Windows 11 PCs can still get broader speed gains from Low Latency Profile, which already accelerates app launches without new CPU instructions as Windows 10 nears 2027 support end.