Which Browser Uses the Least RAM and CPU on Windows

Selecting a primary web browser can be confusing given the wide variety of existing options. However, one of the important factors to consider is resource consumption as it’s always better to have a browser that goes easy on your system. To help you with the same, we tested the top web browsers to see which browser uses the least RAM and CPU resources on Windows.

which browser uses the least ram

In this article, we compared the top four web browsers among Windows users: Google Chrome, Mozilla Firefox, Microsoft Edge, and Opera. Let’s have a look.

How We Tested the Web Browsers

We tested all four web browsers on a Windows machine with a quad-core CPU and 8GB of RAM. For an ideal case scenario, we kept the same five tabs open on each browser and observed the CPU and RAM usage from the Windows Task Manager. We also ensured that no active apps were running in the background while testing the browsers.

Here’s a list of the tabs that we kept open.

  1. 4K YouTube video
  2. Google Docs tab with 500 characters
  3. Gmail
  4. Slack
  5. Typical Google Search

Note: Hardware acceleration was disabled on all browsers to keep this test accurate.

Below are the screenshots of the idle resource consumption on the testbench system, with no active apps.

Idle CPU usage

idle cpu usageidle cpu usage

Idle RAM usage

idle ram usageidle ram usage

Comparing Resource Utilization of Web Browser on Windows

Now let’s get into the details to find out the browsers that use the least RAM and CPU.

1. Google Chrome

The Google Chrome browser was easily able to handle all the active tabs, even with the 4K video playback in the background. It also allowed seamless switching between the tabs with no lags.

chrome task managerchrome task manager

The CPU and RAM utilization of Chrome does not fluctuate much and remains constant. Even when we pushed Chrome in the background, and opened other apps like File Explorer, Chrome was able to keep the 4K video playback active along with all the other tabs.

2. Microsoft Edge

Microsoft Edge is based on Chromium like Google Chrome. Hence, the experience with Edge was much similar to Chrome. It handled 4K video playback with ease and kept the video active even when working with other tabs.

edge task manageredge task manager

However, we noticed that Edge is not much consistent with CPU usage. When you conduct too many actions quickly like rapidly switching between tabs, or suddenly opening a video link, Edge hunts for extra resources causing a spike in CPU and RAM utilization. But it stabilizes within a while and as a user, you will not notice any lags when this happens.

3. Mozilla Firefox

The Firefox browser is not based on Chromium, and hence it can keep a different identity when compared to Chrome and Edge. From our experience, Firefox had the best 4K video playback experience.

firefox task managerfirefox task manager

Firefox does not cause any major spikes in resource usage, even while making quick actions. In terms of the overall browsing experience, Firefox feels better than Edge and Chrome due to its faster animations.

4. Opera Browser

The Opera browser had one of the highest CPU and RAM usage among all the browsers in this list. It does offer smooth 4K video playback, but it struggles in video seeking at times. The animations of Opera are not as smooth as its competition and we felt that Opera has a lot to catch up in browsing experience when headed against the likes of Chrome, Edge, and Firefox.

opera task manageropera task manager

Opera also has the highest number of background processes, which accounts for a higher CPU usage. We also noticed that Opera had some issues with scaling on websites that had too many elements.

Best Browsers With Low RAM and CPU Usage

Microsoft Edge consumes the least amount of RAM and CPU when compared to Chrome, Firefox, and Opera. Even though the CPU usage of Firefox was similar to Edge, the extra RAM utilization pushed Firefox to the second position. Chrome comes third, as it uses slightly extra resources than Firefox.

The Opera browser was disappointing as it consumed the highest amount of RAM and CPU resources.

BrowsersAverage CPU usageAverage RAM usage
Microsoft Edge39%1410 MB
Mozilla Firefox40%1550 MB
Google Chrome44%1640 MB
Opera52%2470 MB

Note: We used the graphs from Task Manager to find out the average CPU and RAM usage. We let the browser run in the background for 5 minutes and waited for the graphs to stabilize, and then used it to calculate the average values.

edge cpu usageedge cpu usage

If you have a low-end PC, then Microsoft Edge is the best option for you as it excels as a low-resource browser. If your system is decent enough, you should not have any problem choosing either of the three browsers – Chrome, Edge, and Firefox as the difference in resource usage is not that huge.

In such cases, you should consider checking the features of these individual browsers to find out the best fit for you. It is worth mentioning that Firefox is the only non-Chromium browser here as it is based on its own Quantum Browser Engine. Most other popular browsers like Brave and Vivaldi are also Chromium-based, making Firefox a unique exception.

FAQs on Best Browsers With Low RAM

1. Are all Chromium browsers the same?

Chromium is only the code base over which a browser is built. The finished product in the form of a browser like Edge, Brave, etc., can be completely different as the user interface and features can be modified by the developers. Hence, not all Chromium browsers are the same.

2. Which browser has the best extension support?

Google Chrome browser has the largest library of browser extensions. However, these extensions can be manually added to any browser based on Chromium. Firefox also supports Chrome extensions, hence extension support does not matter in a web browser as most extensions are compatible with all the top web browsers.

3. Does using browser extensions increase RAM and CPU usage?

Since browser extensions are additional sets of codes that your system has to run, they increase the RAM and CPU utilization by a small margin. The exact resource consumption will depend on the nature and functionality of the extension.

Choose Your Web Browser Wisely

Using a browser suitable for your usage can massively increase your productivity and comfort. If your company-provided Windows computer is not powerful enough, using a lightweight browser can help you save some headaches. We recommend you test a few browsers yourself so that you can find the perfect web browsing companion.

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