Independent control reference for the MSI GeForce RTX 4090 Gaming X Trio on Windows: which NVML and NVAPI calls work on this GeForce card, elevation needs, fan-to-cooler mapping, power and clock limits, temperature sources, and a 102 °C hot-spot event. Built from bench tests, every fact tagged with its source. CC BY 4.0.
windows fan-control gpu nvidia interoperability nvml msi wddm nvapi gpu-monitoring cc-by-4 geforce overclocking librehardwaremonitor hardware-documentation power-limit protocol-documentation rtx-4090 gaming-x-trio hotspot-temperature
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Updated
Nov 4, 2026