I have an older windows machine and I\'m looking for a free antivirus program wh

Question

I have an older windows machine and I'm looking for a free antivirus program which uses the least amount of RAM for their background monitoring process. I'm not concerned with their consumption when running a virus scan, but their background processes which watch for a virus being run.

I could install each of these programs (avg/antivir/avast/etc...), check my free RAM, uninstall it, and install the next one, but I was wondering if anyone already knew what the RAM usage was for each of the major free antivirus programs. Thanks.

Explanation / Answer

My suggestion would be Comodo Antivirus,

It works well upon Windows and among all it uses the least amount of RAM.
doesn't interrupt any ongoing process, runs in background
Auto-updates it's database
Has Auto-Sandbox for isolating infections from system sensitive files
Comes with advanced Firewall and Virus Protection
HIPS technology to protect system-critical files, folders and registry keys from unauthorized modifications by malicious programs
Best Anti-spyware program

Comodo Antivirus supports even recent Windows version and it's free

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