That's good to know, appreciate the guidance! I'll do a comparison between the Heatkiller and Optimus just to satisfy my curiosity and also check if liquid metal compound will help at all. I was hoping I would be able to run the fans below 1000rpm consistently but it looks like that strategy might not work out at high loads. Though in fairness this was a highly synthetic torture test and an unlikely real life scenario so maybe I'm overthinking it.