Does Freeing RAM Actually Speed Up Windows?
It depends on one thing: whether your slowdown comes from memory pressure (swapping to disk) or something else (CPU, disk, thermals, a specific app). Here is how to tell, with numbers instead of guesses.
The test: measure "Available", not "In use"
- Task Manager → Performance → Memory.
- Note Available and whether it stays above ~20% of total RAM.
- Open Task Manager → Performance → Disk and watch Active time while you switch apps.
If Available is low and disk active time is high while you switch apps, you are swapping — freeing memory can help immediately.
If Available is healthy (e.g., 8 GB free of 16 GB), freeing RAM will not make anything faster. Look elsewhere.
When freeing RAM helps
- 8 GB machines running a browser, Teams/Slack and Office at once
- Gaming or video editing while background apps are open
- Machines where "Available" dips under ~10% and the disk light stays on
In these cases, releasing idle pages reduces swapping, and switching between apps feels noticeably smoother.
When it does not help
- Plenty of free RAM: nothing to gain.
- CPU-bound slowness: check CPU usage before memory.
- Failing or full disk: a nearly full SSD/HDD slows everything; free space first.
- A single leaking app: restart that app instead.
A 3-minute before/after check
- Open your usual set of apps and note Available memory + disk active time.
- Release idle memory (Task Manager can't do this; a tool such as MemoryCleaner can, or close and reopen the heaviest apps).
- Note the same two numbers again and switch between three apps, timing how long each switch takes.
If both the numbers and the feel improve, the tool is earning its keep. If not, the bottleneck is elsewhere.
Where MemoryCleaner fits
It shows per-app memory and releases idle pages in one click, which is exactly the "step 2" above. ~2.5 MB, no ads, no telemetry, $20 one-time for up to 5 devices, 30-day trial — enough time to run the before/after check on your own machine.
Run the test yourself — 30-day trial.
Download MemoryCleanerMore: Are memory cleaners safe or a scam? · Windows 11 using 90% of memory?