What I did (but I'll admit this is not an option in many cases) is to move my workstation into a rack in the basement, with 20m DisplayPort cables connecting the monitors and a 20m usb3 extender cable hooking up a usb hub on the desk for keyboard, mouse, usb storage etc.
Let the computer be loud there - noise has become a non-issue when selecting parts. It has a gtx1070 GPU which gets quite noisy under load (gpgpu processing). All 'workstations' I had in the past, like from Dell, got quite load under load, and had (baseline) loud power supplies as well.
I do need access to the power button more often than I thought, so I'll have to wire the front panel power button to a button on my desk.
A similar strategy I am considering. Get a fanless NUC case from Akasa [http://www.akasa.com.tw] and remote desktop to the "real" computer in the basement.
Let the computer be loud there - noise has become a non-issue when selecting parts. It has a gtx1070 GPU which gets quite noisy under load (gpgpu processing). All 'workstations' I had in the past, like from Dell, got quite load under load, and had (baseline) loud power supplies as well.
I do need access to the power button more often than I thought, so I'll have to wire the front panel power button to a button on my desk.