84,488,480 programs installed

Should I remove Smart Defrag 2?

What percent of users and experts removed it?
25% remove it75% keep it
Overall Sentiment
What do people think about it?
(click star to rate)
How common is it?
Global Rank #599
United States Rank #599
Reach 1.1270%
Lifespan of installation (until removal)
< 31.10 days
917.38 days >
Average installed length: 482.01 days


Beta 2.0 0.26%
Beta 1.21 0.18%
2.9 28.83%
2.8.1 0.00%
2.8 25.33%
2.7 28.12%
2.6 1.63%
2.5 2.58%
2.4 1.58%
2.3 3.27%
2.2 3.68%
2.1 1.90%
2.0.1 1.55% 0.01%
2.0 1.07%

Typically installed together

Other programs by IObit

Smart Defrag 2

What is Smart Defrag 2?  (from IObit)

It is known that disk fragment has been a primary cause of slow and unstable PC performance. Smart Defrag 2 is such a FREE disk defrag tool that provides extremely fast and efficient defragmentation to your hard drives intelligently for faster file loading and high disk performance. With "install it and forget it" feat...  Read more


Smart Defrag 2 is a software program developed by IObit. The most common release is 2.9, with over 98% of all installations currently using this version. During setup, the program creates a startup registration point in Windows in order to automatically start when any user boots the PC. A scheduled task is added to Windows Task Scheduler in order to launch the program at various scheduled times (the schedule varies depending on the version). The software is designed to connect to the Internet and adds a Windows Firewall exception in order to do so without being interfered with. The programs's main executable is smartdefrag.exe and has been seen to consume an average CPU of less than one percent, and utilizes about 17.91 MB of memory. The setup package generally installs about 38 files and is usually about 9.42 MB (9,880,775 bytes). The installed file AutoUpdate.exe is the auto-update component of the program which is designed to check for software updates and notify and apply them when new versions are discovered. Relative to the overall usage of users who have this installed on their PCs, most are running Windows 7 (SP1) and Windows XP. While about 51% of users of Smart Defrag 2 come from the United States, it is also popular in Germany and United Kingdom.

Program detailsProgram details

URL: www.iobit.com
Installation folder: C:\Program Files\IObit\Smart Defrag 2\
Uninstaller: "C:\Program Files\IObit\Smart Defrag 2\unins000.exe"
Estimated size: 9.42 MB

Program filesFiles installed by Smart Defrag 2

Program executable:smartdefrag.exe
Name:Smart Defrag
Smart Defrag v2
Signed by:IObit Information Technology
Path:C:\Program Files\iobit\smart defrag 2\smartdefrag.exe
Smart Defrag v2 is a common module used by a number of IObit products.
Additional files:
  • ActionCenterDownloader.exe - Advanced SystemCare Action Center Downlaoder (Action Center Downlaoder)
  • RegisterCom.dll - IObit Register Dynamic Link Library
  • taskMgr.dll - Task Scheduler Dynamic Link Library
  • FreeSoftwareDownloader.exe - IObit Download Helper (Helper helps you to download IObit products.)
  • FreeSoftwareDownloader_SD.exe
  • SDToolTips.exe - Advanced System Care (Advanced SystemCare Tooltips)
  • AutoUpdate.exe - SmartDefrag Updater
  • UninstallPromote.exe - Advanced SystemCare
  • ctask.exe - ctask Application (Task Scheduler Support Program)
  • defragsetup.exe - Smart Defrag 2 (Smart Defrag v2)
  • defragsetup310-free.exe - Smart Defrag 3 (Smart Defrag v3)
  • defragsetup311-pro.exe
  • defragsetup-pro.exe
  • defragsetup-pro0219.exe
  • sd2-setup220.exe
  • sd2-setup-slim.exe
  • smartdefrag310-free.exe
  • smartdefrag3-free.exe
  • smartdefrag-3-free.exe
  • smart-defrag-3-free.exe
  • DiskTypeCheck.dll - Smart Defrag (Check the disk type)
  • IObit SmartDefrag.exe
  • SDDriverMgr.dll - SDDriverMgr
  • TSCommon.dll - TSCommon (Scheduler service common library)
  • IObitCommunities.exe - Like it (IObit like it)
  • SDInit.exe - SDInit (Smart Defrag Initialization Program)
  • NewUpdater.exe - IObit (Reminder)
  • TaskSchedule.exe - Task Schedule
  • bookmarks.exe
  • NtfsData.dll
  • unins000.exe - Setup/Uninstall

Program behaviorsBehaviors exhibited

3 Scheduled Tasks
  • SmartDefrag.exe is scheduled as a task named 'SmartDefrag_Schedule' (runs weekly on Sundays at 3:00 AM).
  • IObit SmartDefrag.exe is scheduled as a task named 'SmartDefrag-BackUpBySmartDefragPortable' (runs weekly on Sundays at 10:00 PM).
  • AutoUpdate.exe is scheduled as a task named 'C:\WINDOWS\Tasks\SmartDefragUpdate.job'.
3 Scheduled Tasks (Boot/Login)
  • SmartDefrag.exe is automatically launched at startup through a scheduled task named SmartDefrag_Auto.
  • AutoUpdate.exe is automatically launched at startup through a scheduled task named SmartDefragUpdate.
  • IObit SmartDefrag.exe is automatically launched at startup through a scheduled task named AutoSmartDefrag.
Startup File (User Run)
  • SmartDefrag.exe is loaded in the current user (HKCU) registry as an auto-starting executable named 'SmartDefrag.exe' and executes as C:\Program Files\IObit\Smart Defrag 2\SmartDefrag.exe.
2 Startup Files (All Users Run)
  • SmartDefrag.exe is loaded in the all users (HKLM) registry as a startup file name 'SmartDefrag' which loads as "C:\Program Files\IObit\Smart Defrag 2\SmartDefrag.exe".
  • IObit SmartDefrag.exe is loaded in the all users (HKLM) registry as a startup file name 'SmartDefrag' which loads as "C:\Program Files\IObit\IObit SmartDefrag\IObit SmartDefrag.exe" /StartUp.
2 Windows Firewall Allowed Programs
  • SmartDefrag.exe is added as a firewall exception for 'C:\Program Files\IObit\Smart Defrag 2\SmartDefrag.exe'.
  • unins000.exe is added as a firewall exception for 'C:\Program Files\IObit\Smart Defrag 2\unins000.exe'.

Program resource utilizationResource utilization averages

Memory:17.91 MB
21.09 MB average
Total CPU:0.0010550788%
0.031193% average
Kernel CPU:0.00071931%
0.016088% average
User CPU:0.00033577%
0.015104% average
CPU cycles/sec:2,596,067
8,062,084 average
70 average
I/O reads/min:712.72 KB
435.61 KB average
I/O writes/min:2 Bytes
105.02 KB average

How do I remove Smart Defrag 2?

You can uninstall Smart Defrag 2 from your computer by using the Add/Remove Program feature in the Window's Control Panel.
  1. On the Start menu (for Windows 8, right-click the screen's bottom-left corner), click Control Panel, and then, under Programs, do one of the following:
    • Windows Vista/7/8/10: Click Uninstall a Program.
    • Windows XP: Click Add or Remove Programs.
  2. When you find the program Smart Defrag 2, click it, and then do one of the following:
    • Windows Vista/7/8/10: Click Uninstall.
    • Windows XP: Click the Remove or Change/Remove tab (to the right of the program).
  3. Follow the prompts. A progress bar shows you how long it will take to remove Smart Defrag 2.

Win 7 (SP1) 62%
Win 10 0%
Automatically starts? Yes
(Found in the run registry)
Uninstall it 25%
Keep it 75%

Windows OS versionsWindows

Which Windows OS versions does it run on?
Windows 7 66.23%
Windows XP 12.84%
Windows 10 12.34%
Windows Vista 8.56%
Windows Server 2003 0.04%
Which OS releases does it run on?
Windows 7 Home Premium 37.67%
Windows 7 Ultimate 16.57%
Microsoft Windows XP 12.61%
Windows 7 Professional 8.96%
Windows Vista Home Premiu... 6.51%
Windows 8 3.06%

Distribution by countryGeography

51.21% of installs come from the United States
Which countries install it?
  United States 51.21%
  Germany 4.61%
  United Kingdom 3.95%
  Brazil 3.00%
  Canada 2.93%
  Italy 2.54%
  Japan 1.74%
  Australia 1.67%
  Israel 1.49%
  Sweden 1.43%
  Spain 1.37%
  Taiwan 1.28%
  Russia 1.26%
  France 1.22%

OEM distributionPC manufacturers

What PC manufacturers (OEMs) have it installed?
Hewlett-Packard 25.76%
Dell 24.07%
Acer 17.36%
ASUS 7.53%
Toshiba 7.17%
Intel 3.05%
Samsung 2.29%
American Megatrends 2.15%
Lenovo 2.04%
Sahara 1.13%
Common models
HP Pavilion dv6 Notebook ... 7.17%
HP Pavilion dv7 Notebook ... 6.40%
HP Pavilion g6 Notebook P... 4.45%
HP Pavilion g7 Notebook P... 3.32%
Dell Inspiron 1545 2.26%
Dell Inspiron N5110 2.19%

About (from IObit)

Founded in 2004 by two creative and enthusiastic programmers, IObit is focused on providing consumers with innovative and comprehensive system utilities and security software for superior PC performance and security.
Publisher URL: www.iobit.com


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