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Rtcx21x64.inf -
Overall Verdict: 7/10 (Reliable but often misunderstood)
rtcx21x64.inf is a critical setup information file for Realtek High Definition Audio drivers on 64-bit Windows (the "x64" in the name). It tells Windows how to install the core RTCX21X64.sys driver, which handles audio processing for many onboard sound chips. rtcx21x64.inf