RPM may refer to any of the following:
1. Short for revolutions per minute, RPM is used to help determine the access time on computer hard drives. RPM is a measurement of how many revolutions a computer's hard drive makes in a single minute. The higher the RPM, the faster the data will be accessed. For example, if you compare two hard drives, one with 5400 RPM and another with 7200 RPM, the 7200 RPM hard drive is capable of accessing data much faster than the other.
Newer computers with SSD drives have no movable parts and therefore have no RPM.
2. RPM can also refer to the revolutions per minute a computer case fan or heat sink fan spins. With a high RPM, the fan moves more air or remove more heat from the computer or processor. However, keep in mind that as you increase the RPM of a fan the noise or decibel (dBA) also increases.
A computers fan RPM can be measured using software tools such as HWMonitor.
3. Short for Red Hat Package Manager, RPM is an installation and packaging tool used with many different Linux variants to install Internet downloads. RPM uses the .RPM file extension when creating a package. For users more familiar with Debian, this tool is similar to the Dpkg tool.