Free Antivirus Ware


FREE AntiVirus Performance Tests


Each year we run several Performance Tests on the top Free AntiVirus programs to see how they impact a computer's performance. See the 8 tests below that we ran on Free Antivirus Software.


1) Memory Use:



Note: 10 separate readings were taken 1 minute apart while the computer was idling. The average memory usage (MB) is given in the graph below.

2) Reboot Time Increase:



Note: Reboot time after antivirus installation was compared to the reboot time without any antivirus software installed. 10 reboots were performed and the average increase in reboot time is shown in the graph below.

3) Installation Size:



Note: The installation size of each antivirus program is shown below - updates were downloaded after installation and are included in the results below.

4) Initial Scan Speed:



Note: A 1.0GB set of files was scanned (3000 total files, including Windows system files, media files, and other files commonly found on a computer system), and the first scan after antivirus installation is shown below. The Initial Scan Speed (below) is generally slower than the Subsequent Scan Speed (see test #5) since many files are not scanned in the latter.

5) Subsequent Scan Speed:



Note: A 1.0GB set of files was scanned, and the average scan speed was calculated from 10 scans (not including the Initial Scan) with a system reboot in between each scan.

6) Initial Application Launch Time:



Note: Mozilla Firefox was launched 10 times with a system reboot in between each. The time taken was compared before and after antivirus installation. The average increase in initial launch time is shown in the graph below. Generally initial application launches (below) take longer than subsequent launches (see test #7). All antivirus add-ons and toolbars for Firefox were disabled/uninstalled before running this test.

7) Subsequent Application Launch Time:



Note: 10 launches of a web browser (Mozilla Firefox) were compared before and after antivirus installation. The average increase in subsequent launch time is shown in the graph below (1st launch after reboot is not included). As with the test above, all antivirus add-ons and toolbars for Firefox were disabled/uninstalled before running this test.

8) File Conversion Time:



Note: Conversion time of a MP3 file being converted to several different formats (MP3 > WAV > MP3 > WMA > MP3). The conversion time with antivirus installed was compared to the conversion time without any antivirus, and the average increase in conversion time of 10 trials is shown below.



Overall 'System Impact Score'



Note: The "System Impact Score" is a cumulative score tallied from the above 8 Antivirus tests. 12 points are given for a top ranking in each of the above tests, while 1 point is given for a bottom/12th-place ranking. The higher overall score the better (96 total possible points).

Free Antivirus Versions Tested: Avast! Free AntiVirus 6.0, AVG AntiVirus Free 2011, Avira AntiVir Personal 10.0, BitDefender Free Edition 2009, ClamWin Free AntiVirus 0.97, Comodo Antivirus Free 2011, Digital Defender AntiVirus Free 2.1, Kingsoft Free AntiVirus v2010.08, Microsoft Security Essentials 2.0, Panda Cloud AntiVirus Free 1.4, PC Tools AntiVirus Free 2011, Rising AntiVirus Free Edition 2011.

Test Computer Specifications: Toshiba Pentium Dual-Core T4200 @ 2.00GHz (64-bit), with 3 GB RAM memory and 210 GB Hard-drive running Windows 7 Home Premium. Acronis True Image is used to create a backup image and to restore from before each antivirus installation, so each AV program runs in a similar environment.

Each antivirus program was run with Default Settings.

Graphs compiled April 26, 2011


Other Free Antivirus Software Tests:

*Also, be sure to compare our commercial (paid) Antivirus Tests.


Want to know more about our Review Process? Watch this video...





Top Free Antivirus Reviews:

  1) Avast! Free AntiVirus 6 Review - Rating:   Excellent
  2) Avira AntiVir Personal 10 Review - Rating:   Very Good
  3) AVG AntiVirus Free 2011 Review - Rating:   Good
  4) Microsoft Security Essentials 2.0 Review - Rating:   Good
  5) Panda Cloud AntiVirus Free 1.4 Review - Rating:   Good
  6) BitDefender Free AntiVirus Review - Rating:   Fair
  7) Comodo Free AntiVirus 2011 Review - Rating:   Fair
  8) Kingsoft Free AntiVirus 2011 Review - Rating:   Fair
  9) PC Tools AntiVirus Free 2011 Review - Rating:   Fair
 10) Rising AntiVirus 2011 Free Review - Rating:   Average
 11) ClamWin Free AntiVirus 0.97 Review - Rating:   Below Ave
 12) Digital Defender AntiVirus Free 2.1 Review - Rating:   Below Ave



Free AntiVirus Reviews: Avast! Free AntiVirus 6
AVG AntiVirus Free 2011
Avira AntiVir Personal 10
BitDefender Free AntiVirus
ClamWin Free AntiVirus 0.97
Comodo AntiVirus 2011
Digital Defender AntiVirus Free 2.1
Kingsoft Free AntiVirus
Microsoft Security Essentials 2.0
Panda Cloud AntiVirus Free 1.4
PC Tools Free AntiVirus 2011
Rising AntiVirus 2011 Free Edition

Free AntiVirus Tests: Performance Tests, Scan Speeds, Updates, Install Times

Link to Us | Privacy Policy | © Free Antivirus Ware. All rights reserved.


Avast! AntiVirus
Excellent

Avira AntiVir
Very Good

AVG AntiVirus
Good

Microsoft AntiVirus
Good

Panda Cloud AntiVirus
Good

BitDefender AntiVirus
Fair

Comodo AntiVirus
Fair

Kingsoft AntiVirus
Fair

PC Tools AntiVirus
Fair

Rising AntiVirus
Average

ClamWin AntiVirus
Below Ave

Digital Defender
Below Ave

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