How can I make my computer faster for free?

Release the memory your browser tabs are holding, cut the programs that start at login, and get the drive back to about 15% free space. Those three cost nothing and cover most slow machines.

Are free PC speed-up programs worth downloading?

No. The category has a long history of bundling adware and inventing problems to charge for, and nothing they do addresses memory pressure, disk health or overheating.

Can I make my computer faster without buying more RAM?

Usually. Extra RAM only helps if you are actually running out, and if you are, using less of it works just as well as buying more — for free.

Does clearing browser cache speed up your computer?

Barely. Cache lives on disk, not in memory, and a cleared cache just means pages reload more slowly for a while. Releasing what open tabs hold in memory is the change that matters.

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August 20, 2026 · 5 min read

How to make my computer faster without spending anything

Every fix here is free and uses software you already have. No upgrades, no subscriptions, and nothing to download — which rules out most of what gets recommended.

The advice that ends in “buy more RAM” is not wrong, it is just premature. Extra memory only helps if you are running out, and if you are running out, using less works exactly as well and costs nothing.

Everything below is free, uses tools already installed, and requires no downloads. That last condition eliminates most of what the internet recommends, which is the point.

Give back what your tabs are holding

This is first because on any machine with 8 GB of RAM or less it is usually the entire problem. A browser open since Monday holds memory for every tab in it, including the twenty you have not looked at since.

Closing them works and nobody does it, because those tabs are things you still intend to get back to. The alternative is releasing the memory while leaving the tab in place — the title stays, the position stays, and the page reloads when you click it. Chrome has supported this for years and surfaces it almost nowhere.

Stop programs launching at login

Windows: Task Manager (Ctrl + Shift + Esc) → Startup apps. macOS: System Settings → General → Login Items.

Each of these holds memory from login to shutdown whether you use it or not. Turn off the ones you recognise and do not need daily — messaging apps, game launchers, sync tools, updaters. They still open normally when you click them. Leave anything you cannot identify.

Make room on the drive

Below roughly 10% free space, every operating system slows down, because updates, temporary files and the page file are competing for room. Aim for 15% free.

Use what is built in — Storage on Windows Settings, Storage Management on macOS. Both show you what is actually taking the space, which is usually a Downloads folder nobody has opened in three years. Neither needs a third-party cleaner.

Check your browser extensions

Extensions run inside every page you open, so their cost multiplies by your tab count. Most can be set to run only when you click them instead of on every site, which is free and often the largest single saving available — how to check yours.

Restart weekly

It clears leaked memory and stuck background processes. If you find yourself needing one every day, that is a specific problem worth finding rather than a routine.

Free things that do not work

Cleaner and optimiser apps. Free to install, and the category is a known source of adware.
“RAM booster” tools. They force programs to drop cached data, which those programs then reload immediately. Net effect is worse than nothing.
Defragmenting. Automatic on Windows, and meaningless on an SSD.
Clearing your browser cache for speed. It frees disk, not memory, and makes browsing slower for a while.

If none of the free fixes move the needle, the bottleneck is probably hardware — working out which one takes two minutes and tells you whether the money should go on a drive or on memory.

Common questions

How can I make my computer faster for free?: Release the memory your browser tabs are holding, cut the programs that start at login, and get the drive back to about 15% free space. Those three cost nothing and cover most slow machines.
Are free PC speed-up programs worth downloading?: No. The category has a long history of bundling adware and inventing problems to charge for, and nothing they do addresses memory pressure, disk health or overheating.
Can I make my computer faster without buying more RAM?: Usually. Extra RAM only helps if you are actually running out, and if you are, using less of it works just as well as buying more — for free.
Does clearing browser cache speed up your computer?: Barely. Cache lives on disk, not in memory, and a cleared cache just means pages reload more slowly for a while. Releasing what open tabs hold in memory is the change that matters.