For your information, Norton may not be the faster but it is still one of my favorite. With today’s computing power, processing consumption used by most antiviruses is not an issue. However, if you are on a very old and sluggish system, selecting an antivirus with the least taxing on the system is a must.
Below is a complete list of some of the most popular antivirus and its usage on system resources. The table does not include detection rate and features.
Memory Usage (MB)
Scan Speed (MB/s)
|Avast Antivirus Pro 6||6.6||20.0|
|Panda Antivirus Pro 2011||9.8||16.4|
|Norton Antivirus 2012||9.9||36.3|
|BitDefender Antivirus Pro 2012||15.7||35.9|
|Avira AntiVir Premium 10||22.9||35.7|
|Kaspersky Antivirus 2012||23.0||34.4|
|AVG Antivirus 2011||29.6||32.4|
|Trend Titanium Antivirus 2011||42.2||27.2|
|F-Secure Antivirus 2011||42.6||23.1|
|McAfee Antivirus Plus 2011||53.2||27.9|