Microsoft is testing showing memory speeds as MT/s (mega-transfers per second) rather than MHz (megahertz) in the Windows 11 Task Manager.
Historically, the data transfer speed of computer memory has been advertised under the MHz (megahertz) metric. MHz represents how many millions of cycles per second a memory module can perform, with each cycle being an action conducted on the memory module, such as storing and retrieving data.
For example, a memory stick running at 3,200 MHz can perform 3.2 billion cycles per second compared to memory running at 2,400 MHz, which can only perform 2.4 billion cycles per second.
However, new technologies have allowed DDR memory to increase the data transfer rate without increasing clock speed (MHz), making the old way of measuring memory less accurate.
Since then, companies and operating systems have migrated to a performance metric called MT/s (mega-transfers per second), the number of data transfers in millions per second.
As first spotted by Windows sleuth PhantomOcean3, Microsoft is now testing showing MT/s instead of MHz in the Windows 11 Task Manager performance tab.

Windows 11 Beta build 22635.3570 showing MT/s in Task ManagerSource: PhantomOcean3
This feature is currently under development and hidden in Windows 11 Beta preview builds.
To test this new feature, you can use ViVeTool to enable the feature using these instructions:
It should be noted that this feature is under development and may not make it to stable Windows 11 releases.
Furthermore, enabling these features using ViVeTool could cause instability on your device. Therefore, do not enable hidden features on your production computer.

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