I'll give you a build without giving you a specific equipment list, because that stuff changes prices and availability weekly.
- CASE - Get a big enough case, so you can install the largest, best reviewed passive CPU cooler you can lay your hands on. That'll keep the damned PC quiet.
Buy Lian Li to have the entire case made of aluminum - better heat dissipation.
- Main-board - Use an ATX board to have enough slots to install yet another interface card as things evolve. Use a mainboard designed to be overclocked (usually gaming boards) Components are higher quality, more robust and benefit from extra heat sinks. You also get more connectors on the back panel.
- GPU - Install a cheap GTX 1650 GPU (unless you have some of the rare plugins, that actually get processed by the GPU. The GTX 1650 is Turing architecture, very power and heat efficient, and it'll render your DAW on two 4K monitors and a 1080p touch screen simultaneously, without screen tearing.
- Power Supply - If you don't know anything about power supplies, buy Seasonic - gold or platinum rated. They make an excellent fanless, silent power supply. Totally worth it and totally stable. (Use PCpartspicker website to assemble your list - they will tell you the wattage it will demand). Then you buy the PSU just ~30-40% above that. Platinum rated power supplies have better efficiency between 70 and 90% utilization.
- Harddrives - Install only SSD's into the system - they make no noise, unlike spinning rust. Use external drives for backup, that you only turn on / plug in to back up.
- RAM - Buy RAM to match your processor - especially if you get an AMD CPU. Get 32GB. If money is not an issue, get 64GB.
- CPU - well, there should be some calculation on what you need for how many tracks with x number of FX running. Don't know if anyone bothered. If you don't go too heavy on FX or are willing to write separate tracks where the FX are baked in, any recent i7 (like 8700K) should allow you 32 tracks without issue. Probably more. If you really need more, its Threadripper time, with the attendant more expensive main-board. Note, that some audio interfaces are incompatible with AMD. Double check before you buy!
If you do 24/96KHz audio, your system performance and RAM is cut in half. You may need it if you do TV or Movie work. Definitely Threadripper - like the new high-end ones, recently announced (Nov 2019).
- Audio Interface - For audio in/out, well, install what your mixing console wants. Thunderbolt 3 interfaces would theoretically be nice, but current mixers aren't offering that, and the audio interface vendors charge a ridiculous Thunderbolt tax. I'd buy a higher end studio mixer with interface before spending money here.
So, if you followed this, you have a powerful computer that makes no noise, without having to buy some overly heavy, overly expensive padded "sound proof" computer case. As of 2019, that should be doable for a little over one thousand Euros/Dollars give or take. But if you start upgrading things all around, don't be surprised if you can reach two-thousand just as easily.
You should install one large Noctua Fan in a location, where it will draw air through the passive CPU cooler, in case things do get hot for one reason or another. Just set the fan to normally be off in your mainboard control panel, and only come if there's a heatwave in your studio.

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Monitors? I like 4K TV's for this. Reduces hunting and scrolling. If you sit relatively close, don't go over 40", or you'll get problems from craning your neck.
If you can sit 80cm-100cm from it, maybe because your mixer and a bunch of other stuff is sitting on a desk, go for 50" to 60 inch works pretty good.
At that distance and TV size, you may be able to not use your reading glasses.