OctaneRender For Carrara requires a Nvidia CUDA-enabled video card with Compute Capability 2.0 or above.
The official list of Nvidia CUDA-enabled products is located at https://developer.nvidia/com/cuda-gpus.
OctaneRender runs of Fermi (e.g. GTX 480, GTX 580, GTX 590) and Kepler (e.g. GTX 680, GTX 690) GPUs, the high-end GTX780 and GTX Titan. It also supports older CUDA enabled consumer video cards (Nvidia GT 400 series and up) but it will be subject to memory size and speed limitations on those cards. Kepler GPUs allow a higher texture limit (256 compared to 128 Fermi) and are also more power efficient and more silent than Fermi cards. GPUs from the GeForce line are usually higher clocked and render faster than the more expensive Quadro and Tesla GPUs.
GeForce cards are fast and cost effective, but have less VRAM than Quadro and Tesla cards. OctaneRender scales perfectly in a multi 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. configuration and can use different types of Nvidia cards at once e.g. GeForce GTX 460 combines with a Quadro 6000.