Jun 28, 2014

Which antivirus software has the least impact on system performance?

I’m looking for antivirus software for Windows 8 that doesn’t have a significant impact on system performance. Any suggestions?

It’s also a trade off. You might get anti-virus software that uses fewer system resources because it is doing less. Real time protection takes resources. Auto-scans take resources. Avast seems to be a good combination of decent protection and light on system resources, but I can’t find an objective measure of it to back me up. I do not notice much impact on system performance with Avast. This is also true of Windows Defender, but as an earlier poster said, it has performed poorly at times in anti-virus software tests by various magazines. Still, it's better than nothing and it can get Superfish off of your Lenovo PC, so it’s got that going for it. Which is nice.
I have used a lot of anti-virus programs





windows defeneder


system mechanic has built in one

AVG is one I used the most. I did notice that when i installed avira it found a lot more then avg ever did when i was infected with torn TV. I downloaded malwarebytes and that got rid of most of it but when I ran a scan with avira it found all of it and fixed it. Avira is by far the best and i found a noticeable but definitely acceptable performance impact

At some point you may want to consider dumping Windows 8 for Linux or OS X. You can get by without antivirus for either of those operating systems. Windows seems to be the OS with the biggest virus problems.

I don’t have information for every antivirus suite out there, but Tom’s Guide tested 5 popular free choices: Avast, AVG, Avira, Malwarebytes Anti-Malware Free, and Microsoft Windows Defender. The good news is that Windows Defender had very little impact on system performance, and bested the others in that respect. The bad news is that it was the worst at actually doing its job and detecting malware. It wasn’t just a teeny, tiny bit worse, it was “no one should be relying on it for PC protections” worse. 


Tom’s Guide picked Avira Free Antivirus as the best overall, but they did note that it could impact performance on low RAM PCs. AVG, which is what I use on Windows 7, was picked as the best choice for Windows 8. It was also described as having minimal impact on system performance. 


Here is the link to the article if you would like to see more details. 


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