Updated November 2026 · 7 min read

How to Clear RAM Cache on Windows 11 Safely

The "Cached" number in Task Manager is not wasted memory and not a problem to solve. It is memory Windows borrowed because nothing else needed it, and it can be handed back in milliseconds. Clearing it by force rarely makes a PC faster — but there are a few situations where it genuinely helps, and a few correct ways to do it without breaking anything.

What "RAM cache" means in Windows 11

Open Task Manager (Ctrl+Shift+Esc) → Performance → Memory. Three numbers matter:

In use — pages owned by running processes. Real demand.
Cached (called Standby in Resource Monitor) — recently read file and program data kept in RAM in case it is needed again. Free to reuse instantly.
Available — sum of the free and standby parts. This is the number that tells you whether you are short on memory.

Windows also keeps a modified page list (dirty data waiting to be written to disk) and may run Memory Compression, which stores compressed pages in RAM instead of writing them to the pagefile. All of these are normal operation, not leakage.

If you only remember one rule: judge memory pressure by Available and Committed, never by Cached.

Before you clear anything: the 60-second check

Press Win+R, type resmon, press Enter, open the Memory tab.
Look at Available and at Hard Faults/sec in the overview tab.
If Available is above 1–2 GB and hard faults stay near zero while idle, there is nothing to fix. Clearing cache here will only force Windows to read the same files from disk again.
If Available is under ~500 MB and hard faults spike whenever you switch apps, you have real pressure — and clearing standby is a band-aid, not a cure.

Method 1 — Restart the apps that hold the memory

Working sets belong to processes. Closing and reopening a browser, editor or chat app returns its memory immediately, including any cache it had built up.

Chrome / Edge: Menu → More tools → Task manager (Shift+Esc in Chrome) sorts every tab and extension by memory. Close the top one first.
For an app that will not close normally: Task Manager → Details → right-click the process → End task.

Method 2 — Sign out instead of rebooting

Ctrl+Alt+Del → Sign out, then sign back in. This ends your user session, so every app you opened and every per-user cache is released — the same memory benefit as a reboot, in about 20 seconds and without restarting drivers or pending updates. It is the most underrated "clear RAM" button in Windows.

Method 3 — Restart Windows Explorer

Shell memory leaks and thumbnail caches accumulate in explorer.exe, especially after browsing folders with thousands of photos.

Task Manager → Details tab, find explorer.exe, right-click → End task.
In Task Manager choose File → Run new task, type explorer, press Enter. The taskbar and desktop return immediately.

This clears shell cache only — expect tens to a few hundred MB, not gigabytes.

Method 4 — Empty the standby list with RAMMap

Windows 11 has no built-in "clear cache" button, by design. The supported way to force it is Microsoft's own Sysinternals tool, RAMMap (download from learn.microsoft.com/sysinternals, run as administrator):

Open RAMMap and look at the Use Counts tab to see how much is Standby.
Menu Empty → Empty Standby List. Available memory jumps up within a second.

Understand the trade-off before you click: the files you just dropped will be read from disk again on next access, so the first launch of each app afterwards is slower. On a machine with 8GB and constant paging this can help for a while; on a 32GB desktop it is pure loss.

Method 5 — Put background apps on a diet

Settings → Apps → Startup: switch off updaters, launchers and vendor utilities you do not need at login.
Settings → Apps → Installed apps → (app) → Advanced options → Background apps permissions → Never for anything you open manually.
Task Manager → Processes → right-click an app → Efficiency mode lowers its priority and pushes it toward ecoQoS power states. Useful for a browser you keep in the background; do not use it on the app you are actively working in.

Method 6 — Release idle pages without closing apps

When you need headroom right now and cannot close the heavy app, a tool can trim each process's idle working set. That is what MemoryCleaner does: it lists processes by memory, you pick one (or all), and it releases idle pages while the app keeps running. It is not "End task" and it does not touch the pagefile. 2.5 MB, no ads, free forever.

Try it before you buy — 30 days, full features, free during the launch promotion.

Download MemoryCleaner

What not to do

Do not disable the pagefile to "free RAM". It removes Windows' safety net and turns a slowdown into an out-of-memory crash. Manage it in Settings → System → About → Advanced system settings → Advanced → Performance → Settings → Advanced → Virtual memory.
Do not run a cleaner on a timer every few minutes. Continuously discarding cache and standby defeats the caching Windows is doing on your behalf and can make a machine measurably slower.
Do not install "RAM booster" tools that only call an undocumented API and show a fake progress bar. Check what a tool actually changes; if it cannot name the API it calls, skip it.

When clearing cache is the right call

Three legitimate cases: you are about to start a memory-heavy task (rendering, a large game, a VM) and want the headroom; an app you cannot restart is holding several gigabytes of idle pages; or you are troubleshooting and want a clean baseline before measuring. In every other case, the honest answer is that Windows was using the RAM well.

For the wider picture — what actually counts as memory pressure — see what is standby memory in Windows 11 and does freeing RAM actually speed up Windows. The homepage with the download and pricing is the English homepage.

FAQ

Does clearing the RAM cache speed up Windows 11?

Almost never. It raises the "Available" number but the next launch of the same apps is slower because their data must be read from disk again.

Is high cached memory a sign of a leak?

No. Cached/standby memory is reclaimable at any moment. A leak shows up as a process's Memory (active private working set) climbing without ever dropping.

Can I clear the RAM cache without third-party tools?

Sign out and back in, restart Explorer, or close and reopen the apps. Those are built in and safe. For the standby list specifically, RAMMap from Microsoft Sysinternals is the supported option.