The decision to now show seconds dates back to Windows 95. Back then the motivation was not power saving, but rather to allow the code related to the clock and

The decision to now show seconds dates back to Windows 95. Back then the motivation was not power saving, but rather to allow the code related to the clock and text rendering to be swapped out to disk on a 386 with 4MB RAM... Raymond Chen: https://devblogs.microsoft.com/oldnewthing/20031010-00/?p=42203 https://devblogs.microsoft.com/oldnewthing/20031010-00/?p=42...