I have been looking for a case where I could house 2 x 3080 cards and 1 x 3090 card, but I do not know which case works best. I am gonna do air cool instead of water cool and besides I would be doing rendering and simulation rendering so two or three graphic cards would be fully used to the max and it is gonna be hot. So that is why I am looking for a case that gives me the best airflow. Osidian 1000D is good, but I think it is too heavy. Hope those experienced builders should shed some lights.