10 best antivirus software for low-end PCs [2021 Guide]

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With all of the threats that are present on the internet, it can be quite difficult to survive without antivirus software. However, antivirus software is quite important in keeping your computer safe from all the malicious threats that may plague it. Some antivirus software are better than others, but all of the ones listed below are of great quality and performance.

Translated by “Delyan Kratunov” from the blog “Swiftly” http://swiftly.blog.bg/

When you are looking for an antivirus to protect your computer, it is important to find a balance between having enough protection to keep you safe from malware and being light enough not to slow your computer down. (A word about our picks: We selected each of these antivirus applications because of their limited impact on computer speed and resource usage, and when possible, their ability to do more than just detect malware.)

ESET Internet Security is one of the best antivirus programs you can use. It is an advanced antivirus with artificial intelligence, which means it is constantly adapting and improving.

It is also an ideal and productive tool for gamers or anyone who wants to work or play on the computer undisturbed.

Moreover, the program does not consume much resources from your computer. So you can watch movies, play games, work and much more, but with this antivirus you will not experience any slowdown.

Some of the best features:

  • Compatible with Mac and Linux operating systems
  • Protects your PC from viruses, worms, ransomware, spyware and other types of malware.
  • Multi-level technologies
  • Game mode to avoid pop-up windows during the game.
  • Regular updates

ESET Internet Security

Get one of the best modern cyber security solutions that also works great on older PCs.

Avast is a global giant in the antivirus industry with hundreds of millions of users worldwide.

Avast has features like excellent detection of malware and parasites with real-time protection, making it one of the best antivirus programs in the world.

Avast Free Antivirus provides browser protection via special plug-ins that require only a short installation time.

This program protects your browser pretty well, especially against malware threats, flags dangerous links in search engine results and blocks trackers.

In addition, the in-game feature prevents the display of updates or pop-ups that may interfere with the user’s gameplay.

The important features are as follows:

  • Large number of functions available
  • Excellent URL filtering capabilities
  • The perfect antivirus for low-end PCs
  • URL filtering and
  • Game mode

Avast Free Antivirus

Free antivirus solution that covers all your home PC needs

Avira Antivirus is one of the most popular antivirus programs, offered for free and used by millions of people. This antivirus program provides the best protection for users’ computers.

The installation of the antivirus is slow and contains many ads that remind the user that he is using free software.

After installation, things get interesting: The user interface opens a home page consisting of a main window with a rack menu and panels where the user can view system status.

Once the PC protection is clicked, the user can start scanning the system. Users can also enable real-time security features and configure default settings.

However, Avira is slow at running scans: Each full analysis takes about two and a half hours, which is significantly longer than other competitors.

Unlike other antivirus solutions that ignore already scanned files during subsequent scans, Avira continues to scan these files during each scan, which means that subsequent scans always take more than 2 hours.

Some of the best features:

  • The antivirus provides good independent results when used
  • Highly effective in blocking malware
  • Quality protection for lower-end computer users

Avira Antivirus

More than 100 million people worldwide use Avira for its excellent protection and ease of use.

As threats become more sophisticated and attacks more inventive, you need to protect your PC even if you don’t have the most advanced configuration.

That’s where VIPRE comes in, promising to have little impact on your resources, but a formidable punch against all threats.

This impressive security solution protects your PC from ransomware and other emerging threats, viruses, trojans, rootkits, exploits, spyware and more.

If you are in the US, VIPRE is your best choice because it has award-winning customer service that will help you for free.

This intelligent antivirus software is always on the lookout for malicious activity and blocks any attempt to infiltrate or steal data.

The main features are as follows:

  • Free premium support and customer service for US residents
  • A first-class defence
  • Easy to install and use

VIPRE Antivirus Plus

VIPRE offers smart security, is lightweight and has free customer support for US residents.

BullGuard Antivirus is one of the simplest solutions you can install on your computer to protect it from viruses and keep it running fast.

The software is designed with low system load in mind, which is ideal if you are using it on a low-end PC.

Although most antivirus solutions do an excellent job at detecting viruses and malware, BullGuard stands out from other antivirus solutions by the extra features it offers its users.

If you are using a computer with lower specifications, you may be tempted to use optimization software or cleanup programs to rid your computer of unwanted files.

They may provide some benefit, but you are loading your system with more programs, which will slow it down.

By combining all these features into one package, BullGuard offers its customers exceptional functionality. This means fewer programs and less strain on your computer.

To find out what else BullGuard can do for you, we invite you to read our full review where we discuss the system requirements, key features and our experience with the program.

As mentioned earlier, BullGuard focuses on delivering top performance and protection, but forgoes a glossy, complicated to navigate user interface.

That way, the developers pass the savings on to you and you get a user-friendly antivirus solution.

And to show that BullGuard is confident in its product, you can try it free for 30 days with full functionality.

Here is a brief overview of our findings:

  • Multi-layered protection against malware
  • System optimization
  • Encrypted cloud backup


BullGuard Antivirus fully protects your system from viruses while using minimal resources.

Bitdefender has the best detection rate of the last 5 years and the solutions are installed on more than 500 million systems worldwide.

This is certainly a very good reason to consider installing Bitdefender Antivirus Plus.

Its technologies based on artificial intelligence and machine learning anticipate, detect and block all threats, including the newest ones, before they infect your system.

Although Bitdefender is a very comprehensive security solution with many built-in features, it consumes minimal resources on your computer.

Moreover, this antivirus solution has optimization tools that can speed up your computer’s startup time and improve performance.

Bitdefender Antivirus Plus also has a very sensitive nose for phishing sites. It tracks them down and blocks them even before you see their false promises.

The main features are

  • Technologies for AI and machine learning
  • Improved system performance
  • Safe online banking

Bitdefender Antivirus Plus

Bitdefender Antivirus Plus is an award-winning solution that uses very little of your PC’s resources.

This source has been very much helpful in doing our research. Read more about avast free antivirus and let us know what you think.

Frequently Asked Questions

Which antivirus software slows down computer the least?

According to a new report published by PrintersDownload , the 4 most popular antivirus software, namely Norton, AVG, Kaspersky and Bitdefender, have a huge security impact on computer performance. The research was conducted on a Dell Vostro laptop with an Intel Core i5-4200U processor, 4 GB of RAM and a 500 GB hard drive. The computer’s speed was measured before and after the installation of antivirus software, and the results are quite surprising. If you’re looking for a good antivirus software for your computer, one of the most important things you want to look at is how much it slows down your computer. With so many antivirus programs out there, it can be hard to decide which one to use. Luckily, we’ve tested each of them to find out which one really is the fastest.

Which is the No 1 antivirus for PC?

This text is sensitive. Click edit and regenerate for new copy. Million of people are infected by virus every day and realize how much it cost to get rid of all of them.

Which is the lightest antivirus software?

There are several options to choose from, depending on your needs. For example, if you’re looking for protection against viruses or other threats, you’ll want to install software that includes this functionality as part of its basic package. Most antivirus software comes in either a free version or a premium version. There’s a lot of talk about antivirus software these days (listen to any episode of “The Daily Show”). And since you’re here, you’re probably interested in hearing about the lightest antivirus software out there. The free edition of Bitdefender antivirus is a good place to start because, while it has the usual antivirus bells and whistles, it goes easy on your computer.

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