I have a mining rig with only 3 OC gpus and OC'd processor. I need to keep the case open with a filtered 26" stand fan in front of it blowing 24/7. I have a ryzen 5 1600 at 3.8 on stock cooler and 3 gtx 1070 cards on the mobo, all at +650 on mem, so they get HOT. Because its a huge sore sight having a fan in front of the thing with the case open id like to get a case for this thing. Im considering the Corsair 740, placing the included front fans on the top as exhaust and cooling the cpu with a corsair H115i system mounted forward. i have a powered pci extension i can use on one of the cards. Im concerned if this set up will be able to keep the system cool once closed. Typically this wouldnt be an issue for a regular computer, but this system is also a miner and aside from a couple of hours of gaming in the evening is running in OC mode on full load 24/7. Im trying to keep the system cool to ensure future casual use as one of the cards will eventually be used in the current set up to build a pc for my g/f when mining finishes slowing down in the next few months.