Which Browser Uses The Least CPU?

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The Central Processing Unit or the CPU is the main component in the motherboard that runs the programs of a PC. All the software and the apps installed on a PC use the CPU to perform the task. Like the internet browsers also use the processing power of the CPU to run smoothly and perform tasks. But the question arises, which browser uses the least CPU speed?

There are lots of internet browsers available to be installed on a PC. Among them, Mozilla Firefox tends to use the minimum per CPU.  The Windows and MAC operating system comes with their own internet browsing apps preinstalled. But not all browsers are effective for the CPU.

Many browsers use up lots of speed and RAM allocation. It makes your PC slow and choppy. This ultimately reduces your work efficiency. In this article, we shall learn which browser uses the least CPU power.

Which Browser Uses The Least CPU? – More detailed discussion

Depending upon the benchmark rating, RAM management, and CPU usage, Mozilla Firefox uses the least CPU speed. In the Jetstream test and sun spider test, Mozilla Firefox shows comparatively good results than the other browsers.

These benchmarking tests for the browser use the criteria such as CPU usage, RAM memory usage, the browsing speed, etc. In the Jetstream 2 test, Mozilla Firefox shows the highest ranking over Chrome, Microsoft Edge, and Opera. These are some famous and competitive browsers in the digital platform.

Top 10 browsers that use the least CPU

Different digital companies bring out different browsing software. But not all internet browsers are effective against the CPU and the PC itself. In this section, we shall learn about the 10 best internet browsers for PCs that use a minimalistic amount of CPU power.

Apple Safari

It is the official web browser for the MAC operating system and Apple products. All the Apple gadgets such as the Macbook, iPod, iPad, and iPhone come with Apple Safari preinstalled. It has a moderate user interface and a good amount of browsing speed. It has been observed that 10 web pages can be opened completely in under 30 seconds only.

Moreover, this test uses only 6-10% of the CPU power and around 500MB of RAM memory. It also saves a minimal amount of junk and cache files which helps consume CPU power. Therefore it can be said that the Apple Safari is a CPU-friendly web browser in the digital market.

Mozilla Firefox

It is one of the most popular web browsers for PCs. This browser has been in service for more than 18 years. The Mozilla Firefox is popular for its minimal consumption of CPU power. Since the browser has a lot of customizable properties and minimal pop-up options, the browser is a favorite for corporate users.

Besides, the Mozilla Firefox browser possesses an efficient RAM management algorithm. It does not compromise the browsing speed and uses less memory space as well. All these features make Mozilla Firefox the best Third-Party internet browser for PCs.

Avant Browser

Next on the list is the Avant Browser. It is quite a famous web browser for its security properties. Again, the Avant browser comes with a very small amount of installation files. Hence, it uses a comparatively little amount of CPU power to perform. Based upon the performance and availability the Avant Browser is good amongst the younger generation and personal users.

Opera Web Browser

Opera comes when the world faces the smartphone revolution. Its android version named Opera Mini has been the most versatile web browser for a long time. At the same time, Opera also comes for the PC platform as well. It is considered to be the most lightweight internet browser. 

It does have a bad crash report. But the Opera has a lot less CPU usage while running. That is why this internet browser is a good option for multitasking and corporate offices. Moreover, the Opera Web Browser is actively used by home users for daily personal activities.

Microsoft Edge

For around two decades the Windows operating system brought the iconic Internet Explorer as the default web browser. It was not popular for its slow nature and heavy CPU usage. But, in recent times the internet explorer has been renamed Microsoft Edge. 

The Microsoft Edge has been redefined to be one of the lightest and most speedy web browsers. Besides, being a preinstalled browser it uses very little CPU power as well.

Google Chrome

Google Chrome is the currently widely used web browser for both PC and smartphone platforms. It is one of the most versatile products from the tech giant Google. It is very popular for its default search engine, and friendly user interface. The Chrome browser consumes a good amount of internet even running in the background for pop-ups, notifications, and advertisements. 

Again, Chrome also takes up much RAM space for smooth running. That is why it is not suitable for low-end devices. But the CPU usage and performance of Google Chrome make it a very popular and competitive browser.

Torch internet Browser

Torch is one of the underrated web browsers in digital platforms. But if you have a lower CPU power then Torch can provide you with smooth browsing performance. It has some security issues and a lack of updates. But the usage of the Torch internet browser is very noteworthy.

Vivaldi- Web Browser

It’s a new browser for the PC platform. Having good security details and decent browsing speed, the Vivaldi web browser has a balanced CPU usage and lightweight file. This web browser also has a better crash and performance report than other new browsers.

Comodo IceDragon

Comodo Ice Dragon is popular amongst home users, gamers, and home users. It is because the COmodo IceDragon web browser does not interrupt much with the RAM memory and CPU power. Hence, other programs run quite smoothly alongside this.


If you are using a very old PC setup and do not have much CPU backup to your system. Then the PaleMoon browser can give you a decent amount of browsing speed without compromising the other programs running in the background.

Which browser uses the least CPU for windows?

Among the other web browsers, Firefox and Opera use the least amount of CPU speed. Both of these have good security and performance versatility.

Comparing these two, Firefox would be the least using internet browser with high-quality web browsing performance.

Which browser uses the least CPU for MAC?

For the MAC operating system, the Apple Safari is the best browser for using a minimal amount of CPU speed. Besides, it is the default web browser of Apple.

Therefore, it does not take any additional space on your PC. Moreover, the Apple Safari allows running multiple tabs smoothly without reducing the internet speed.

Which browser uses the least CPU for Linux?

For the Linux platform, also Firefox is the most usable and effective web browser. It uses the least CPU usage. In spite of being open-source software, Firefox has good popularity because of its security, crash report, and performance.

Moreover, the Vivaldi internet browser also works great on the Linux platform; it is lightweight and less CPU-consuming.

Here we attached a comparison video between a few browsers. It will help you for a better understanding:


Web browsers are the most commonly used software in our daily life. But not everyone can possess a high-end custom PC because of the high expense. That is why you must know the best possible browser for your PC. the lesser CPU it uses the more effective it can be for you.

Moreover, using a lightweight browser will allow you to do multiple tasks at the same time. Because it will take the least CPU allocation. Your work becomes effective using such browsers. That is why you have to choose the web browsers for your PC wisely depending on your PC configuration. Now, I think you have a clear idea about – which Browser Uses The Least CPU.

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Gary Scott

Hi There, I am Gary Scott, a Computer Engineer, and owner of this website. My friend and I created this website to share our knowledge, expertise, and experience with our fellow Computer community and pc enthusiast. I am a member of the Association for Computing Machinery (ACM) and the Institute of Electrical and Electronics Engineers (IEEE). I have been writing for Motherboard, CPU, GPU, RAM, Power Supply, Intel/AMD comparisons, CPU/GPU benchmarking, Gaming performance, Xbox, Play Station, and How to build your own PC. I will be regularly updating this website with new resources, If you have any questions or comments, please feel free to contact me.

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