If you upgrade the fans in your ASIC miner, you can overclock, even while air cooled, EVEN IN THE SUMMER TIME..
I have this S19 J Pro running at 120 Terahash with hotside temperatures of only 72°c. Not only that, but its quieter than running stock, and you can duct the air to control where it ends up.
My Twitter: https://twitter.com/_SpaceWarehouse Instagram @nicholas_james_johnson My Discord: https://discord.gg/vFJ3nRHhGy