How does the choice of Operating System affect image generation performance in Stable Diffusion?

How does the choice of Operating System affect image generation performance in Stable Diffusion?
NVIDIA has released the SUPER variants of their RTX 4080, 4070 Ti, and 4070 consumer GPUs. How do they compare to their non-SUPER counterparts?
How does performance compare across a variety of consumer-grade GPUs in regard to SDXL LoRA training?
AMD has published a guide outlining how to use Microsoft Olive for Stable Diffusion to get up to a 9.9x improvement in performance. But is that enough to catch up to NVIDIA?
In DaVinci Resolve 18.6, Blackmagic is claiming up to a 4x improvement in Neural Engine performance for AMD GPUs, and a 2x improvement for NVIDIA. Is this a true claim, or a matter of cherry-picked results that won’t impact most users?
Blender expands AMD GPU support with HIP-RT integration. What is HIP-RT, and how much does it impreove rendering times?
Installing add-in cards—like capture cards—can limit PCI-e bandwidth to the GPU. Does the reduction of PCI-e bandwidth harm performance in content-creation?
Stable Diffusion is seeing more use for professional content creation work. How do NVIDIA GeForce and AMD Radeon cards compare in this workflow?
The NVIDIA GeForce RTX 4070 and 4060 Ti (8GB) are the most recent additions to NVIDIAs consumer family of GPUs on their Ada Lovelace Architecture. How do they compare for content creation against their previous generation counterparts?
Maxon’s Redshift adds AMD GPU support. How do AMD’s video cards perform in the latest version of Redshift?