My six-year-old Asus Vivobook with 8GB of RAM was freezing every single day. I’d open a few browser tabs in the morning, the fan would kick in, the cursor would start dragging, and within minutes, the whole system locked up. It got so bad that I was killing background processes just to type a paragraph in a text document.

After weeks of this, I was already looking at $800 replacements. But before doing that, I looked at what was actually choking the system. Every issue traced back to Chrome constantly freezing under ordinary workloads, so I decided to test an open-source browser to see if the hardware was truly at fault.

The weight Chrome carries on aging machines

Dozens of processes for ordinary workloads

To understand why my laptop was suffocating, I had to look at how Chrome uses memory. Chrome runs on a multi-process architecture. Every tab, extension, and plugin runs as its own isolated process. This design keeps the browser stable because one crashing tab won’t bring down the rest. But the trade-off becomes obvious the moment you open Task Manager. With just seven tabs running, I counted over thirty separate processes.

On a 16GB or 32GB system, you barely notice the overhead. My older machine with 8GB, however, couldn’t absorb that cost. Chrome burned through most of the available RAM within a few minutes of opening the browser.

When a computer runs out of physical RAM, the operating system starts writing data to the hard drive as temporary memory. That swap is painfully slow even on solid-state drives, because no storage drive comes close to the speed of RAM. Within minutes, my system would hit 100% disk usage, and the entire system would freeze, not just the browser. By the time I closed a few tabs, it was already too late because Chrome had exhausted the available RAM.

How a different browser engine solved the problem

Fewer processes and built-in tracking protection

Realizing that Chrome was the bottleneck, not my hardware, I decided to look elsewhere. I wanted something built around resource efficiency and user control, without the background overhead of a browser tied to an advertising ecosystem. That search led me straight to testing open-source Chrome alternatives to see what else was out there.

With open-source browsers, the code is publicly available and auditable. There are no mandatory background services syncing your data across a dozen apps you didn’t ask for, and any telemetry the browser does collect can be fully disabled. That’s a different deal from Chrome, where some data collection stays on no matter what you toggle.

I tested Brave, which takes Chrome’s open-source codebase and strips away tracking and ads, but Firefox stood out for a different reason. It runs on its own rendering engine, Gecko, which is completely independent of Blink, the same one Chrome and Brave both use. Instead of giving every tab its own process like Chrome does, Firefox caps its content processes at eight and groups additional tabs into the ones already running.

Stepping outside the Chrome ecosystem also offered an unexpected privacy gain. Chrome is a browser built by an advertising company. It wants to know where you go, what you look at, and how long you stay there to serve better ads. By moving to an open-source browser with built-in tracker blocking, I cut out a layer of background noise I didn’t even know was there.

A week with Firefox on the same hardware

The first thing I noticed after switching was the silence. My laptop’s cooling fan, which used to spin up the moment I opened Chrome, stayed quiet through an entire morning of browsing. With the same twelve tabs open, Firefox was using around 1.8GB of RAM, whereas Chrome usually took 3.5GB. My disk usage never once hit 100%.

Getting out of Chrome’s ecosystem did take some work, though. I had to export my bookmarks and set up Bitwarden to handle the passwords instead of relying on Chrome’s built-in tool. Google Keep was another loss since Google doesn’t build that extension for Firefox, so I switched to a lightweight open-source alternative.

That $800 upgrade I was convinced I needed never happened. The hardware was never the problem.