Microsoft says Windows 11 now runs noticeably better on PCs with 8GB of memory, and it has put numbers on it. In a Windows Experience Blog post on November 3, Pavan Davuluri, Executive Vice President of Windows + Devices, says Windows is now up to 20% more responsive on 8GB PCs and that multitasking is up to 40% faster in Microsoft's lab test.
Tom's Hardware places the announcement against an ongoing global PC component shortage that, it says, is forcing manufacturers to cut specs, and notes a resurgence of 8GB laptops earlier this year.
What Microsoft changed
Microsoft describes three areas of work: making better use of the memory a PC already has, protecting the interactions that need to feel instant, and cutting how much memory Windows and its own apps need.
- Compression. Microsoft says it has tuned memory compression specifically for 8GB PCs, so Windows can keep up to 2GB more active data in memory instead of pushing it out to slower storage. The practical upshot, according to the company, is that an app or browser tab you left open is less likely to reload when you return to it.
- Responsiveness. Opening Start, searching, right-clicking, opening Settings, launching Snipping Tool and opening File Explorer respond up to 20% faster than with the January 2026 update, Microsoft says. It does this by briefly prioritising what you asked for and backing off background work such as search indexing while you're active.
- Edge and Teams. Windows now connects directly to an Edge process that is already running, which Microsoft says can open Edge up to 33% faster (this one needs Edge 150 or later). Teams can turn on Efficiency Mode by default on 8GB PCs, which Microsoft says helps it launch up to 20% faster.
- Less memory used. Across Windows, Edge and Microsoft 365 apps, Microsoft says committed-memory growth in its multitasking tests fell by up to 900MB, with Word, PowerPoint, Excel and Outlook contributing 360MB of savings. On PCs with 8GB or less, Widgets now loads only when opened, saving roughly 200MB, and inactive Edge tabs now sleep after 15 minutes by default rather than two hours.
Where the numbers come from
This is the part worth reading slowly. The 40% figure comes from one scenario: opening 20 Edge tabs, a 4K video, large Word, PowerPoint and Excel files, Outlook and File Explorer one after another on the same machine. Microsoft's footnotes say the test ran on an HP OmniBook 3 with 8GB of memory and a Snapdragon X Plus processor, comparing Windows 11 build 26200.7623 with build 26200.9445, and that the "results are specific to this scenario and configuration and are not a benchmark." The 20% responsiveness claim is based on Microsoft's telemetry from 8GB PCs, comparing build 26300.9550 with build 26200.7628. Neither of those tested builds is the one Microsoft tells you to install (more on that below).
Tom's Hardware makes the same point plainly: these are internal tests run by Microsoft, and the claimed gains will need to be tested. PCWorld adds that Microsoft doesn't show how fast or slow that workload was in absolute terms.
PCWorld's analysis also argues the bigger problem sits outside Windows. It says other software makers aren't necessarily following Microsoft's lead, that some apps won't run on 8GB at all, and that many run poorly because their minimum specs are far from their recommended ones, while new AI features push memory use up. Unless other developers make the same commitment, PCWorld concludes, Microsoft's effort may be wasted.
How to get it
Microsoft says you need Windows 11 version 26H2, build 26300.9818 or later. Go to Settings > Windows Update, turn on "Get the latest updates as soon as they're available" and select Check for updates. Keep Edge, Microsoft 365 and Teams updated too, because some of the improvements arrive through app updates or the Microsoft Store. Microsoft notes that rollout timing may vary by device and region.
Microsoft also says demanding work such as 3D modelling, advanced video editing or large-scale data processing still benefits from 16GB or more.
Mia's take: If you already own an 8GB laptop, this is a free update worth installing, and the Edge tab change alone should help. If you're buying, though, treat "up to 40%" as Microsoft's best case on one machine rather than a promise. The apps you actually use will decide how 8GB feels, and Microsoft doesn't control most of them.
Reporting notes
