Update January 2019: One year after the initial post, we ran the battery of tests again, using the latest Beta version of Blender 2.80 and the official 2.79b release. The visual quality has improved significantly and now the 2.80 renders look very close to the 2.79 ones. As we have upgraded our infrastructure, we added the new GPUs to the mix as well. Read below for the charts and our comments.

The upcoming major release of Blender – version 2.80 – has a lot of buzz surrounding it. And for good reason, too. There’s the brand new Eevee engine, showing a lot of promise. And there is a truckload of new features – new grease pencil, workspaces concept, layers and collections, and many others. On the performance side, there are also significant improvements, and a notable addition is the new hybrid render mode. This allows rendering using both the CPU(s) and the GPU(s) from the same machine, promising speed improvements in all Cycles renders.

The hybrid rendering mode is indeed an interesting feature. It has been present in V-Ray for a while with good results. So, naturally, we were excited to see it come in Blender for Cycles, too. Because it so happens that there are a large number of GPU machines in our backyard, that also have pretty powerful CPUs, we decided to put the new feature to the test.