So some specs:
Thermaltake P3 open ATX tower
ASUS Strix Z270E MB
Corsair H100i V2 Liquid CPU cooler
EVGA 1080 GTX “Hybrid” GPU (partially liquid cooled)
ASUS 27" monitor with G-sync
All great stuff but I still haven’t flown because I made the mistake of starting with DCS Nevada. That will be downloading into tomorrow morning. So I haven’t stressed it at all. That said, it’s super quiet–on par with my 2010 iMac with essentially a laptop interior.