GPU Cooler Interface

Functions
NVAPI_INTERFACE	NvAPI_GPU_GetTachReading (NvPhysicalGpuHandle hPhysicalGPU, NvU32 *pValue)

Detailed Description

The GPU cooler APIs are used to get and set the fan level or equivalent cooler levels for various target devices associated with the GPU.

Function Documentation

NvAPI_GPU_GetTachReading()

NVAPI_INTERFACE NvAPI_GPU_GetTachReading	(	NvPhysicalGpuHandle	hPhysicalGPU,
		NvU32 *	pValue
	)

DESCRIPTION: This API retrieves the fan speed tachometer reading for the specified physical GPU.

HOW TO USE:

• NvU32 Value = 0;
• ret = NvAPI_GPU_GetTachReading(hPhysicalGpu, &Value);
• On call success:
• Value contains the tachometer reading

SUPPORTED OS: Windows 7 and higher

TCC_SUPPORTED

Parameters

[in]	hPhysicalGpu	GPU selection.
[out]	pValue	Pointer to a variable to get the tachometer reading

Return values

NVAPI_OK	- completed request
NVAPI_ERROR	- miscellaneous error occurred
NVAPI_NOT_SUPPORTED	- functionality not supported
NVAPI_API_NOT_INTIALIZED	- nvapi not initialized
NVAPI_INVALID_ARGUMENT	- invalid argument passed
NVAPI_HANDLE_INVALIDATED	- handle passed has been invalidated (see user guide)
NVAPI_EXPECTED_PHYSICAL_GPU_HANDLE	- handle passed is not a physical GPU handle