Pavan Davuluri, Microsoft’s executive vice president for Windows and Devices, wrote on Nov. 3 that Windows 11 is up to 20% more responsive on PCs with 8 GB of memory once they reach build 26300.9818 or later. The number comes from Microsoft telemetry that compares build 26300.9550 with the older 26200.7628, so it describes an average across machines rather than a stopwatch result on one laptop. Microsoft paired it with narrower claims about memory, Edge, Teams and Microsoft 365.
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Machines with 8 GB of RAM sit at the entry level of the Windows range, and Davuluri’s post amounts to an admission that they have been squeezed. It also lists work still ahead, including smarter memory compression and lighter versions of File Explorer, Notepad and Paint built on WinUI 3. Several of the gains depend on app updates rather than Windows alone, which matters for anyone hoping a single download changes everything.
Keeping 2 GB more active data out of slow storage
The central change is in how Windows decides what to hold in RAM. According to Microsoft’s own post on the Windows Experience Blog, the operating system can now keep up to 2 GB more active data in memory instead of moving it to slower storage, a change that arrived in build 26300.9550. Microsoft says growth in committed memory during multitasking fell by up to 900 MB in September 2026 testing. The workload behind that figure combined 20 Edge tabs, a 4K video, large Office files, Outlook and File Explorer. In a separate lab run on an HP OmniBook 3 with a Snapdragon X Plus chip and 8 GB of RAM, multitasking finished up to 40% faster, comparing build 26200.9445 with 26200.7623.
Widgets now loads only when opened on PCs with 8 GB or less, which Microsoft puts at roughly 200 MB saved while the panel is closed. Edge puts inactive tabs to sleep after 15 minutes, down from two hours.
Edge, Teams and Microsoft 365 carry the app-level share
Not every claim lives inside Windows. Microsoft says Edge opens up to 33% faster from Start or from links, but only on build 26300.9818 or later paired with Edge 150 or later. Microsoft’s Edge release notes list version 157 as the current stable build as of Nov. 5 and mention version 150 only as the minimum for Accelerated App Launch, so the Edge condition is easy to meet on an up-to-date install. Teams launches up to 20% faster because Efficiency Mode is now on by default for 8 GB machines, and Word, PowerPoint, Excel and Outlook save 360 MB between them. Start, Search, right-click menus, Settings, Snipping Tool and File Explorer respond up to 20% faster than after the January 2026 update, by Microsoft’s measure. WhatsApp’s Windows app reports a double-digit cut in memory use, with no specific figure given.
Microsoft lists more work for the next few months: smarter memory compression, shared web engines so that Search and Widgets, and OneDrive and Photos, stop duplicating components, WinUI 3 versions of File Explorer, Notepad, Paint and the new Windows search, less memory reserved for hardware in work with PC makers and silicon partners, and outreach to third-party developers. Microsoft gives that window and no firm dates.
Independent tests and the limits of the claims
Outside testing points the same direction, with caveats. Abhijith M B, a contributing editor at Windows Latest, found on his father’s 8 GB laptop that memory in use after a restart fell from about 5 GB on Windows 11 25H2 to 3.3 GB on 26H2 at the same monthly patch level, while committed memory dropped from 4.8 GB to 2.9 GB. He cautioned that those readings cannot be compared directly with Microsoft’s 900 MB figure, which measures growth during a workload, and that opening the Discover feed pushed usage back up.
An earlier Windows Latest test from Oct. 21 used the same laptop plus a fresh 8 GB virtual machine. Its author acknowledged that the virtual machine skipped a year of updates, so 26H2 alone does not explain that drop, and he noted that Microsoft’s 20% responsiveness figure compares 26H2 against an older 25H2 build rather than the build he tested.
One of Microsoft’s numbers is not a Windows measurement at all. The 94% multi-core gain for a 2026 Dell XPS 13 over a 2021 model with 8 GB comes from Principled Technologies testing commissioned by Microsoft, and it compares hardware generations. The 40% multitasking result, in turn, rests on a single lab scenario on a single laptop.
Getting build 26300.9818 on an 8 GB machine
Microsoft’s Windows 11 release information shows that version 26H2, build 26300, became generally available on Sept. 29, 2026, and that build 26300.9818 shipped on Oct. 28 as update 2026-10 D, KB5127936. Home and Pro editions are listed with updates through Oct. 10, 2028. Davuluri’s instructions are to open Settings, go to Windows Update, switch on the option to get the latest updates as soon as they are available, and run Check for updates, then keep Edge, Microsoft 365 and Teams current because some improvements arrive through app updates or the Microsoft Store. Windows Latest advises installing the optional KB5127936 update or waiting for the Nov. 10 Patch Tuesday release.
Two questions remain open. The post does not list supported Windows editions, and it does not say whether PCs on versions 24H2 or 25H2 receive any of the changes. Microsoft says only that rollout timing and availability may vary by device and region.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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