OctaneRender® is a GPUThe GPU is responsible for displaying graphical elements on a computer display. The GPU plays a key role in the Octane rendering process as the CUDA cores are utilized during the rendering process.-based render engine. It is important to manage the GPUs in the system that are used for rendering. This is done from the Devices tab under Render Setup. Under this tab, the checkboxes for unsupported GPUs are not shown, and you can enable just the GPUs with a supported compute model.
Under this section you'll find:
Figure 1: The Devices Tab from the Render Setup window