Welcome to the PC Pitstop Process Library. We have an extensive list of the most common processes currently running on PCs. Use this library to inspect the safety of your running processes on a regular basis.

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alcmtr.exe (Realtek Event Monitor)

Percentage of recently scanned PC's with this process running: 0.21%
Average CPU use for this program: 0%
Average RAM for this program: 2 MB


In addition to the file name, alcmtr.exe, the following version information is used to identify the file. If the file does not match this information, it may be a different file. To ensure the file is absolutely correct, run a free and comprehensive scan.

Vendor contains:Realtek
Product contains:Realtek AC97 Audio - Event Monitor

To view version information with Windows Explorer, right-click the file and click Properties, Version.


Vendor or Distributor's Web Site

http://www.realtek.com.tw/



Win Patrol

ALCMTR.EXE is installed with Realtek audio chips but is not needed.

alcmtr.exe  uses excessive system and memory resources with no corresponding benefit. Applications such as these should be disabled to improve overall system performance.

PC Pitstop recommends WinPatrol Plus for monitoring all of the background activity on your PC. WinPatrol Plus provides an easy to understand descriptions of over 15,000 processes and programs.


MD5 hashes is the way that computers can define the uniqueness of a file. Anti malware vendors frequently use this technique to detect and clean malware. It is common for a program to have multiple MD5 hashes as the developers create newer versions of the program. For the program called alcmtr.exe, we have detected more than 10 different MD5 hashes. Click on a hash to research the hash in Google.

Program Name MD5 Count
alcmtr.exe> 10
MD5 Hashes
# MD5 Size
1 0x8b4cbba1ea526830c7f97e7822e2493a 68 KB
2 0x78cb739158efe0d1dbb4198872c6d6ce 68 KB
3 0xe2bf6dae25609edbdd45666510ebbc91 56 KB
4 0x5ba6ec2f9b8bd4d7d372c1cc6f3ee552 56 KB
5 0xc7c8b79223e36655d4f214aca885739c 56 KB
MD5 Hashes
# MD5 Size
6 0xcea9fdf9d0cd7c026662acad8ab4aa0e 57344 bytes
7 0xea438d679fd55612b195539971f90a1c 57344 bytes
8 0x26fed37efaa96062a4910626e8e7ba45 57344 bytes
9 0x7ac6357a4e86d134aeedf1cd6a93da12 65536 bytes
10 0x163092f78c03419e6fe590130faff04f 57344 bytes


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PC Pitstop is the undisputed leader in PC diagnostics. Our running process library is culled from our database of over 100 million PC diagnostics and scans.

To find the latest driver for your computer we recommend running our Free Driver Scan.

Find out how to make your computer faster by running our Free Performance Scan.

Tips from the PitCrew

Tips from the Pit Crew

Every process running on your computer takes up CPU cycles and valuable memory. For optimal PC performance and resource utilization, you should be aware of every process on your computer. PC Pitstop designed this process library to help you know which processes are worthwhile and others that slow system performance.

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Important Note

A file name alone may not be enough for positive identification. PC Pitstop's Overdrive tests and spyware scan use information such as the company name, product name, or install directory.

If you are unable to identify a file, ask about it in our forums after running our full tests.