NVIDIA GeForce RTX 30 Series OpenCL / CUDA / OptiX Compute + Rendering Benchmarks - Phoronix

That's the quick look at the current RTX 30 line-up compared to the RTX 20 series in a wide variety of GPU compute/rendering workloads.

Blender 3.2 Performance With AMD Radeon HIP vs. NVIDIA GeForce On Linux - Phoronix

CUDA vs OptiX Render in Blender Cycles

NVIDIA GeForce GTX 1060 To RTX 4060 GPU Compute & Renderer Performance On Linux Review - Phoronix

Blender 2.81 Benchmarks On 19 NVIDIA Graphics Cards - RTX OptiX Rendering Performance Is Incredible - Phoronix

Blender 2.90 Performance With GeForce RTX 3080, 18-Way NVIDIA CUDA/OptiX Comparison - Phoronix

Blender 2.81 Benchmarks On 19 NVIDIA Graphics Cards - RTX OptiX Rendering Performance Is Incredible - Phoronix

NVIDIA RTX 30 Series vs. AMD Radeon Linux Gaming Performance For April 2021 - Phoronix

OpenCL - Wikipedia

Blender 3.2 Performance With AMD Radeon HIP vs. NVIDIA GeForce On Linux - Phoronix

NVIDIA GeForce RTX 3080 Offers Up Incredible Linux GPU Compute Performance Review - Phoronix

NVIDIA GeForce RTX 4090/4080 Linux Compute CUDA & OpenCL Benchmarks, Blender Performance Review - Phoronix

CUDA vs OptiX Render in Blender Cycles