RTX 4090 vs 2x 4080s vs 2x 4080 for SDXL / Wan2.2 in ComfyUI?

As title. I currently use a single 3090, I also do LLM but all options above satisfy my use case, so I'm concerned about speed of SDXL & Wan2.2 in ComfyUI. To clarify, by 4090 I mean the 4090 48GB modded card, and by 4080 and 4080s I mean 4080 and super with 32GB mod. VRAM wise should be sufficient. I would like to know the speed difference between the three cards, since with a single 4090 (even the 24GB model) I can get two 4080 32GBs online. TL;DR: Ignoring VRAM concerns, how big is the speed gap between 4090, 4080 super and 4080? submitted by /u/m31317015 [link] [comments.