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Why can two identical Windows installations behave differently on identical hardware?
Two identical Windows installations on same hardware can behave differently due to driver versions and update histories. Firmware settings and installed software also create subtle but real perfo...
If you update the BIOS between installing the two copies, the ACPI (Advanced Configuration and Power Interface) tables exposed to Windows change. This directly alters how the OS schedules threads across P-cores and E-cores (on Intel) or CCDs (on AMD).