Mathieu Menuet has announced the latest version of E-Cycles and E-Cycles RTX, his accelerated version of Blender’s rendering engine. The RTX version promises speed boosts of up to 4 times compared with native Cycles. A purchase includes both versions, the standard release that uses the original Cycles CUDA backend , and the new RTX version that uses the OptiX backend introduced in Blender 2.81. E-Cycles costs €99, find out more on Gumroad.