The fastest render engine is Vray, but Cycles X is hot on it's heels (details in comments) : r/blender
Cycles X — Blender Developers Blog
Blender: A Cycles render settings guide - Artisticrender.com
HOW TO RENDER SUPER-FAST IN BLENDER - TUTORIAL (Easy) - YouTube
Setting the Cycles render parameters | Blender Cycles: Lighting and Rendering Cookbook
How To Speed Up Cycles Render In Blender (Updated 2022) | Gachoki Studios
Blender 3. Cycles X is fast and light in the viewport, but when Render is extremely slow and crash the PC after 2 samples. : r/blender
Faster Rendering with the CrowdRender Addon for Blender - Blender
Speed Up Renders in Blender (Cycles)! - YouTube
4 Easy Ways to Speed Up Cycles — Blender Guru
Easy way to speed up Cycles rendering & also rendered viewport performance - Lighting and Rendering - Blender Artists Community
Cycles X — Blender Developers Blog
E-Cycles: 2x faster rendering with Blender 2.80 and 2.79
Cycles Now Faster Than Ever — Blender Guru
How To Improve Speed Of Blender's Cycles X Rendering Engine
18 Ways to Speed Up Blender Cycles Rendering - YouTube
How To Speed Up Cycles Render In Blender (Updated 2022) | Gachoki Studios
Smoke drastically increases render time - Blender Stack Exchange
5 Tips to SPEED UP Cycles Interior Rendering - BlenderNation
