10 Lightest Antivirus On Memory Usage During Idle and Scanning

Updated: November 8, 2019 / Home » Computer and Internet Security » Download Free Antivirus [ Windows / macOS ]

If you’re looking for an antivirus that is light on memory during idle and scanning, here are the top antivirus that you might find useful for your slow computer. Remember, light doesn’t mean better detection rate, vice verse, heavy on memory usage doesn’t mean it is a good antivirus either. The best antivirus is the one you feel most comfortable in, the one that allows you to play Dota or Diablo without lagging it. Then again, in today’s ample computing world, lagging is mostly due to your broadband internet speed.

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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 anti-viruses 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 the complete list of some of the most popular antivirus and its usage on system resources. The table does not include detection rate and features. For those in the dark, some antivirus has a ‘gaming mode’ where it will reduce the resources required when you are playing Dota or Counter Strike.

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Top 5 Lightest Antivirus on Memory during Idle and Scanning

Do you find this information useful? Remember to share this with your friends on Facebook and twitter. Thanks. 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. The top 5 lowest resource grabbing antiviruses based on my own test are.

↓ 01 – Top 5 Lightest Antivirus On Memory (Idle)

  • Avast Free Antivirus – 9KB
  • AVG Antivirus Free Edition – 9.8KB
  • Norton Antivirus 2011 – 10KB
  • Norton 360 – 11.5KB
  • Kaspersky Pure – 14KB

↓ 02 – Top 5 Lightest Antivirus On Memory (Scanning)

  • Avast Free Antivirus – 62KB
  • TrendMicro Internet Security – 67KB
  • CA Antivirus Plus – 78KB
  • Norton Antivirus 2011 – 77KB
  • Kaspersky Pure – 82KB

Antivirus Memory Usage and Processor Consumption Comparison

 Memory Usage (MB)
smaller better
Scan Speed (MB/s)
bigger better

Avast Antivirus Pro

6.620.0

Panda Antivirus Pro

9.816.4

Norton Antivirus

9.936.3

BitDefender Antivirus Pro

15.735.9

Avira AntiVir Premium

22.935.7

Kaspersky Antivirus

23.034.4

AVG Antivirus

29.632.4

Trend Titanium Antivirus

42.227.2

F-Secure Antivirus

42.623.1

McAfee Antivirus Plus

53.227.9
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↓ 03 – Top 10 Most Devastating Computer Viruses

↓ 04 – Top 10 Antivirus Market Share

Global market share held by the leading Windows antivirus application vendors in January 2014, this includes both free and paid, which explains why Microsoft is dominating the computer security market with their free antivirus.

antivirus-market-share
Image source: Statista