>>2874043eh, I mean my point was to run it comfortably, not that it didn't run on lower vram. The information I have is that older versions of A1111 would crap out after two gens, with the only workaround to lower the quality settings or use forge. I can only assume that with less vram it would OoM earlier. But on the newer A1111 versions it doesn't OoM (as frequently). If it's improved to the point that a 8GB card can run multiple gens without OoM, that's great, but not what I would call comfortable if it's only a bee's dick away from crashing. Like, say if you wanted to have a refiner model loaded in, or do some tagging while waiting for your gen, maybe those things are more difficult on 8GB compared to 12GB.
On my 4GB card, it required the lowvram flag, and that was the slow version.