V-Ray GPU can run on one or more CUDA-capable graphics cards. To specify which cards are to be used, go to Windows Start > Programs > V-Ray for 3ds Max > Select rendering devices for V-Ray GPU for 3ds Max #### of each render server machine and pick. By default, the render server machine uses all its graphic cards in CUDA DR rendering, if nothing has been specified beforehand.
With V-Ray 6, the Select rendering devices for V-Ray GPU for 3ds Max #### has a redesigned UI and extended functionalities. You can find the tool again in Start Menu> Programs > V-Ray 6 for 3ds Max #### > Select rendering devices for V-Ray GPU for 3ds Max ####, where #### is the 3ds Max version.
The tool allows for selecting GPU devices for CUDA/RTX rendering, or for denoising.
Note that when multiple devices are selected for denoising, out of all the devices that match the query only the device with the highest compute capability is used for the denoising process.
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The redesigned UI and extended functionalities are available only in V-Ray 6 for 3ds Max, Beta.
With V-Ray 6 Beta, the Select rendering devices for V-Ray GPU for 3ds Max has a redesigned UI and extended functionalities. You can find the tool again in Start Menu > Programs > V-Ray 6 for 3ds Max > Select rendering devices for V-Ray GPU for 3ds Max ####, where #### is the 3ds Max version.
The tool allows for selecting GPU devices for CUDA/RTX rendering, or for denoising. It also allows for setting Low GPU Thread Priority per device.
Note that when multiple devices are selected for denoising, out of all the devices that match the query only the device with the highest compute capability is used for the denoising process.
