"The antivirus with the lowest impact on PC performance," according to AV Comparatives. Avast ensures optimal performance on you Windows 7 PC, and advance features like Cleanup and Browser Cleanup speed things up further still.
Windows 7's Microsoft Security Essentials provides only very basic protection for your PC. Avast ensures complete protection with advanced features such as intelligent antivirus, Home Network Security, Software Updater and more.
AV Comparatives has successfully tested Avast against malware on Windows 7. Yet another reason why more than 230 million users trust Avast – it's Windows 7's official consumer security software provider.