Accelerating Cycles using NVIDIA RTX — Blender Developers Blog
Behind The Pixelary — CPU vs GPU rendering in Blender Cycles
Blender Cycles AMD Opencl It's possible working now. - Technical Support - Blender Artists Community
Running OpenCL Cycles using Blender 2.71 & AMD GPUs | Anteru's Blog
Blender Cycles Render Engine Benchmarks With NVIDIA CUDA On Linux Review - Phoronix
Thomas Beck on Twitter: "For all #macOS #OpenCL #b3d users: We're discontinuing Blender's support for Cycles OpenCL rendering for Mac OS due to the countless compiler bugs that can't be fixed properly. #