Introduced with and Windows Server 2012 , GetSystemTimePreciseAsFileTime resides in kernel32.dll . Windows 7 only supports the older GetSystemTimeAsFileTime , which typically has a much lower resolution of approximately 15 milliseconds.
Since there is no official Microsoft "patch" to add this function to Windows 7, users typically rely on the following methods: getsystemtimepreciseasfiletime windows 7 patched
On Windows 7, GetSystemTimeAsFileTime is "coarse"—it only reads the base time. However, NtQuerySystemTime performs a calculation: it takes the base time and adds the current performance counter delta since the last timer interrupt. This calculation effectively gives you a "precise" time, interpolating the system clock to near-nanosecond accuracy. The patch didn't have true hardware HPET (High
Inside CLOCKWORK, a miracle of fraud occurred. The patch didn't have true hardware HPET (High Precision Event Timer) access—Windows 7’s scheduler wasn't built for it. Instead, Greta had implemented a "statistical predictor." It read the CPU’s rdtsc (Read Time-Stamp Counter), cross-referenced it with the last known GetSystemTimeAsFileTime tick, and interpolated. It was a lie, but a beautiful, consistent lie. and interpolated. It was a lie