FurryBall is an extremely fast rendering system using the processing power of your GPU instead of your CPU. FurryBall offers UNBIASED Monte Carlo raytracing (path trace - similar like CPU Arnold renderer), with real-time progressive preview in the viewport. Final frame rendering to multiple file format, layers and passes are obvious. FurryBall was developed for purposes of CGI animated movies, VFX and feature movie rendering. FurryBall RT is extra simple and easy to use for an artist - you can tune whole image quality with only a single parameter if you want.
GPU rendering doesn't load you CPU at all - much faster work on your system during rendering.
FurryBall RT can be used also like GPU preview render for Arnold render, because it supports Arnold standard material too - almost all parameters are supported. Try those samples.
Each license comes with ALL THREE plugins (Maya, Cinema 4D, and 3DS Max) with very unique and smooth collaboration between them. FurryBall fully supports an unlimited number of GPU in a single computer and also can be used like standalone renderer.