I have a low end pc with 2GB ram and 500mb storage but now i am confused that which antivirus or internet security should i use which doesn't eat much system resources. I have tried McAfee, avast and eset IS but these used very high resources.Can anyone help me with this problem?
The blocking of ads also reduces the load of pages for your hardware.
Beyond that, the best security is to limit the users to 1, have said user not visit dodgy websites or links.
Also consider tuning your system to use less resources, such as services, start-up processes, scheduled tasks and non-essential browser extensions or toolbars.
I won't argue against an Internet Security package, but not all users need one. So decide your needs and see what's available. When I went looking at a package recently for a friend, one that looked quite good was Bitdefender, but I don't remember its system footprint offhand.