In this article, we will be discussing the 14 best antivirus software with low resource/CPU usage that you can use. These are proper computers designed for those who want to avoid any virus because they have a limited amount of time and resources.

The “best antivirus that doesn’t slow down computer” is a necessary tool for anyone who has a computer. These 14 antivirus software have low resource/cpu usage and will not slow down your computer while they are running.

14 Best Antivirus Software with Low Resource/CPU Usage


Ivan Jenic’s contribution

Expert in Troubleshooting

Ivan has dived deep into knowing this operating system, with a specialize in drivers and driver problems, thanks to his passion for all things Windows and his natural curiosity. When he isn’t tackling, he is… Continue reading

This page was last updated on May 4, 2022.

Originally published in March of 2021.

  • If you’re worried about your computer’s resources, you should look for an antivirus with a minimal footprint.
  • We’ve compiled a collection of programs that guard against spyware, viruses, worms, adware, and rootkits while using very little CPU.
  • Non-disturb modes and other performance-oriented features are available in some of these systems.
  • Below are both paid and free antivirus programs that have been shown to have minimum system effect while keeping it safe.



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While scanning or doing other tasks on the system, certain antivirus software has been known to slow down devices.

They use a large amount of resources. Many antivirus program users have been concerned about this problem.

However, there are several excellent antivirus apps that use little resources, use minimal CPU, and do not slow down your PC.

They also provide the best virus and malware protection. We’ve prepared a list of antivirus software that fits under this category in this page.

What is the least resource-intensive antivirus?

Antivirus software now has a slew of security capabilities to keep your computer safe at all times. As a result, it’s critical that these functions don’t slow down your computer.

A good security program should be able to provide Real-time Security without interfering with your computer’s operation. As a result, if you want to safeguard even low-end PCs that don’t have many resources to begin with, a Antivirus with a small footprint with a little file is advised.

It is critical to test your antivirus software to ensure that it is the best option for you. The following are the most significant assets to look for when it comes to performance and system resource usage:

  • CPU use is minimal.
  • Memory space needs are minimal.
  • Unnecessary tasks are temporarily blocked or paused by these features.
  • Even while scanning, there is a little footprint.

These criteria are met by the antiviruses listed below. We took it upon ourselves to ensure that they work properly and put them to the test.

We conducted full and fast scans on each antivirus on a midrange PC to see how much resources they used.

It turns out that they all required a tiny percentage of the system’s resources, allowing the PC to function normally even while the scan was left running in the background while other chores were completed.

We checked the CPU utilization % using Task Manager and compiled the data into the table below so you can see it for yourself:

Windows-10-Activation-error-0xc0020036 NOTE

The lowest rates are included in this table. As you may be aware, these figures fluctuate as the procedure goes. For the first 1-2 minutes of the scan, several antiviruses took up a bit more resources, but subsequently they became more steady and decreased to the rates shown above.

We should also highlight that Internet Security by ESET does not include a built-in fast scan option, therefore we used Custom scan to construct a profile with criteria that are comparable to those found in other antiviruses’ rapid scan choices. Operating Memory, Boost Sectors, System Registry, and the WMI Database were all examined.

How do antivirus programs make use of your computer’s resources?

As you may have seen, while conducting complete scans, most of these programs use more resources. This makes logical, given that they trawl through all of the data on your machine.

However, in rapid scan mode, several of them were more CPU intensive. If you’re wondering why, it’s because of performance.

Applications that are well-written, such as those described in this article, do not use more memory than they need.

Some antiviruses just modify the amount of data examined during a short scan, which is enough to speed up the procedure when compared to a full scan.

Other antiviruses, on the other hand, place a greater emphasis on speeding up the scan and utilize extra processes to make it as quick as possible, which might result in increased CPU utilization.

This implies that the least resource-intensive antivirus, as reported in Task Manager, may take longer to scan, but a more resource-intensive antivirus would scan quicker.

They all have a modest footprint, so it’s a question of personal choice. To help you make an educated selection, we put up a concise rundown of the features and options available in each of these antiviruses.

  1. Internet Security by ESET
  2. Total Security by Kaspersky
  3. Total Security by Bitdefender
  4. Norton Antivirus is a software that protects your computer from is a software that protects your computer from
  5. Avira Antivirus is a free antivirus program.
  6. VIPRE Antivirus Plus is a powerful antivirus program. is a powerful antivirus program.
  7. TotalAV Antivirus Pro is a powerful antivirus program.
  8. Safe F-Secure
  9. Dome of the Pandas
  10. 360° Total Protection
  11. Avast Free Antivirus is a free antivirus program. is a free antivirus program.
  12. BullGuard
  13. Smadav
  14. Maximum Security by Trend Micro


ESET is a PC security business that has been around for over two decades.

Internet Security by ESET is an antivirus software compatible with the Windows OS and uses very little of your computer’s resources.

It protects your computer against spyware, viruses, worms, adware, and rootkits. Detachable media, such as external hard drives and USB flash drives, must be safeguarded. 

Gaming mode blocks unwanted pop-ups and distractions when gaming, but it still runs in the background and uses less resources. 

The SysInspector takes a snapshot of system modifications to keep track of them and to help with tech assistance. 

Don’t hesitate to contact tech support through video tutorials, email, forums, phone support, or live chat if you see anything unusual on your Windows 10 or 11 PC.


Internet Security by ESET

Internet Security by ESET has over 110 million users worldwide and can use only a very small amount of resources.


Total Security by Kaspersky has great features and does not slow down your laptop or desktop, nor is it memory hungry, with a low CPU and resource usage.

Kaspersky is frequently the first to release a viable virus cleanup solution. If your computer’s operating system or programs are performing slowly, you may improve system speed using Total Security by Kaspersky.

Total Security by Kaspersky will protect your computer against viruses and trojans that may enter via USB, LAN network, or other sources other than the Internet.

Kaspersky is capable of blocking assaults using exploit methods in addition to fighting viruses and other malware.

You may alter parameters to decrease resource use since Kaspersky is recognized for its sophisticated choices and customizable workflow.

The security tool for laptops includes the ability to disable scheduled processes while on battery power and enable balance protection at startup.

Furthermore, by deferring scans while the CPU and disk systems are under intense load, you may prevent any shutdowns or battery waste while still achieving the best performance.


Total Security by Kaspersky

It protects against information security threats, network and phishing assaults, and spam with little resources.


Bitdefender antivirus is recommended to everyone willing to pay for a premium version in order to achieve the best results.

Bitdefender’s utilization of system resources is one of its advantages; once the antivirus is properly integrated into your system, you won’t notice much of a difference in speed.

Furthermore, Bitdefender is a top antivirus program with the greatest malware and virus detection rate.

Running a System Scan in high priority mode may be a beneficial choice for scanning the PC if system resources are not a problem.

Bitdefender will be given equal system resources if it complies with this condition, rather than competing with other applications directly.

Bitdefender includes a VPN that protects your privacy and prevents advertising from following you across the internet. Anti-Phishing, Anti-Spam, and Anti-Fraud technologies are also included to protect your online surfing experience.


Total Security by Bitdefender

It features performance-enhancing tools and web-filtering technologies to prevent you from accessing virus-infected websites.


Norton’s Performance Monitoring program keeps a careful eye on your computer and alerts you when CPU or resource consumption is excessively high.

This message also tells you which component or software is using a lot of RAM. When performing certain tasks, such as connecting to the Internet or displaying a webpage with a lot of rich media content, some apps may use a lot of RAM.

To reduce excessive CPU and disk use when Norton is doing scans, the Crypto feature that consumes resources is turned off by default in the software.

You must choose to use the feature, and you will only see the option and be able to use it if your system allows it.

Norton is an excellent Anti-Spyware program. The program’s smart mode prevents malware from altering files.

This capability is quite handy if you’re looking for a solution to a particular issue, think that your computer is being unlawfully observed, or have keyloggers installed.

It’s fairly uncommon for Norton to utilize resources when other apps are operating in the background. When it comes to complete scans, if you set them to run just when the system is idle, and you never leave it idle long enough, Norton will eventually take over and conduct the scan anyhow.


Norton Antivirus is a software that protects your computer from is a software that protects your computer from

When it detects a virus, worm, or other potentially hazardous software, it isolates it and alerts you.


Avira is a free antivirus program for PCs running Windows. It defends you against big dangers while using little system resources.

It is not only a trustworthy and complete cybersecurity program, but it also protects your privacy with its free VPN. It also includes an utility to assist you in cleaning your computer.

You may also use the Password Manager application to quickly and simply safeguard your online accounts using strong, unique passwords that you don’t have to remember.

Some key aspects include:

  • VPN service is provided for free.
  • Boost your PC’s performance using this speed enhancer.
  • Identity theft prevention
  • Anti-Scam software is a program that protects you from becoming a victim of



To safeguard your computer that utilizes less resources, adopt a complete cybersecurity solution.


The VIPRE Antivirus Plus is a powerful antivirus program. is a powerful antivirus program. tool uses very few resources and offers maximum protection against ransomware and other emerging threats, viruses, Trojans, and more.

It’s simple to use and allows you to easily choose or schedule scans, as well as check for current definition changes and configure how patches are applied.

This fantastic antivirus software detects and inhibits dangerous activities, as well as any spying or data theft efforts, and alerts you right away.

Here are the key features of VIPRE Antivirus Plus is a powerful antivirus program. is a powerful antivirus program.:

  • Real-time Security
  • Anti-tracking
  • Protection Against Ransomware
  • VPN Access for All Devices is Unlimited
  • Updates are made automatically.


VIPRE Antivirus Plus is a powerful antivirus program. is a powerful antivirus program.

VIPRE Antivirus Plus is a powerful antivirus program. is a powerful antivirus program. helps you to provide total protection for your PC against malware threats with few resources.


TotalAV is one of the top antivirus with a small system footprint, and it deserves to be on our list.

Despite the fact that it has a small resource footprint, this antivirus accomplishes its job. It operates in the background invisibly and only scans the system when it is absolutely essential.

Furthermore, the program is accessible for almost every OS, thus you may use it to safeguard your PC, tablet, smartphone, and other devices.

Here are a few advantages of utilizing TotalAV:

  • Anti-Malware
  • Anti-Ransomeware
  • Anti-Spyware
  • Anti-Malware
  • Firewall from afar



This antivirus program will operate in the background, ensuring that your computer is secured at all times without slowing it down.


Safe F-Secure is the best for browser protection and also has one of the best antivirus software for Windows. This security software utilizes only a small part of your computer’s resources.

It also protects your devices against ransomware, Trojans, and viruses, as well as keeping all of your financial connections safe.

Other characteristics include:

  • When viruses are found, you will get an instant notice.
  • To locate, lock, or wipe a lost device, use a device finder.
  • It handles users and devices efficiently.



F-Secure has 30 years of expertise in security and can operate with the tiniest of resources.


The Dome of the Pandas antivirus software is compatible with Windows OS an is, again, a low resource antivirus.

Panda protects PCs via cloud processing, which eliminates the need for time-consuming software updates and scans.

Panda received a 98 percent score from AV-Test for zero-day attacks and a 100 percent score for known threats.

Other noteworthy aspects include:

  • A process monitor shows you which programs are running and whether or not they are utilizing a secure connection.
  • It also includes a useful vaccination tool for scanning USB sticks for harmful software.
  • If a harmful application locks a PC, Panda can quickly build an emergency rescue USB disk that allows you to scan the system.


Dome of the Pandas

Dome of the Pandas offers excellent protection even on scarce resource PCs or old sistems.


360° Total Protection is an ideal antivirus for low-resource devices and well as for older systems running on Windows OS, Vista, 7, 8, and 8.1, 10.

To give the greatest security against Trojans, malware, and rootkits, it employs a number of engines.

Key features include:

  • Performance, security, balance, and custom are the four default options.
  • The user interface is straightforward and straightforward.
  • It protects you against three types of threats: internet surfing, privacy, and system flaws.
  • It looks for vulnerabilities in a variety of places, including the key apps, system settings, ongoing processes, startup items, and the system’s essential files.


360° Total Protection

Protect your computer from viruses and malware, increase system efficiency with low CPU utilization, and run a comprehensive scan.


Avast Free Antivirus is a free antivirus program. is a free antivirus program. is another antivirus with low resource utilization. This antivirus software is very good for your PC and other devices. In addition, it is free antivirus software.

This antivirus removes all sorts of viruses and other malware. In order to achieve maximum security, Avast Free Antivirus is a free antivirus program. is a free antivirus program. will also analyze unknown files in order to prevent malware infection.

Avast Free Antivirus is a free antivirus program. is a free antivirus program. automatically detects weaknesses in your Wi-Fi and unwanted connections on your network.

Thanks to the Behavior Shield, Avast Free Antivirus is a free antivirus program. is a free antivirus program. will keep an eye on your apps and report any suspicious behavior.

The following are some of the highlights:

  • For gaming, use the Do Not Disturb mode.
  • Behavior Shield monitors your program to ensure that it does not alter unexpectedly.
  • Antivirus with a small footprint
  • Intruder protection for your home network

Furthermore, Avast Software has purchased AVG Antivirus and its technology. They will both emerge as global leaders in this burgeoning market if they join together for a better-reinforced value proposition.

The award-winning AVG Business portfolio protects small and medium businesses throughout the globe with cloud security and remote monitoring and management solutions, which are distributed via a global partner network.

Avast will be able to build more technically sophisticated personal security and privacy solutions as a result of its expanded size.


Avast Free Antivirus is a free antivirus program. is a free antivirus program.

Avast delivers the most complete protection with the least resource utilization, whether you use your PC for gaming or business.


Bullguard may seem to be a bit overprotective at first, with a proclivity for false positives that might obstruct genuine activity.

However, this antivirus software continuously searches code for signatures and other irregularities associated with malware, providing you with sophisticated triple layer security.

Before an infection may start, any discovered malware is quarantined and subsequently killed.

Additional characteristics include:

  • Apps and websites that may be trusted are recognized.
  • Scanning your home network
  • Improved firewall with additional layers of heavy-duty security against intruders and viruses to prevent unauthorized Internet connections.
  • Continuous vulnerability screening alerts you when a device needs to be updated.
  • Installation is simple, and experienced assistance is available 24 hours a day, 7 days a week.

Obtain BullGuard.


This Indonesian antivirus protection software is suitable for sluggish machines and is Windows OS compatible. It is a resource-constrained antivirus.

Smadav consumes very little of your computer’s resources. This software adds to your PC’s security and is compatible with other antivirus programs.

The following are the primary characteristics:

  • Virus detection and removal, resulting in increased PC security.
  • USB Flashdisk Protection
  • Cleaning and recovering contaminated files from the USB Flashdisk

Obtain Smadav


Maximum Security by Trend Micro provides dependable malware protection against both known and undiscovered threats.

It specifically protects against different varieties of ransomware, which is now a serious concern. Trojans and viruses are blocked at regular intervals. It filters spam and identifies harmful URLs in browsers, allowing you to visit safely and securely. 

Overall, it’s a good anti-virus program with a few of minor drawbacks. However, resource use may be excessive at times, although this may be adjusted in the settings.

This may cause problems if your PC’s specifications are set to the lowest level. Furthermore, it performed poorly in independent lab testing, which might be a source of future worry.

Trend Micro Support, on the other hand, gives solid solutions to help consumers with technological challenges.

⇒ Get Maximum Security by Trend Micro

More information about this subject may be found here.

All of the antivirus software on this list is trustworthy and simple to locate, install, and control. They use relatively little resources and provide the highest level of virus and malware protection.

Check out our guide to the best lifetime license antivirus tools if you’re looking for more software to protect your devices.

Which one is your favorite? Let us know in the comments section.

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