The GetSystemTimePreciseAsFileTime function was introduced in to provide sub-microsecond precision for system time. Windows 7, even with its latest service packs and official platform updates, does not natively support this API .
If you are looking for the technical reasoning behind why this function is sought after, here is how it compares to older Windows 7 methods: OS Support GetSystemTimeAsFileTime Low precision; standard on Win7. QueryPerformanceCounter
High-Precision Timestamping on Windows 7



The GetSystemTimePreciseAsFileTime function was introduced in to provide sub-microsecond precision for system time. Windows 7, even with its latest service packs and official platform updates, does not natively support this API .
If you are looking for the technical reasoning behind why this function is sought after, here is how it compares to older Windows 7 methods: OS Support GetSystemTimeAsFileTime Low precision; standard on Win7. QueryPerformanceCounter
High-Precision Timestamping on Windows 7