RussianSensation,
It's amazing to have a rig that's quiet at all times, no matter the load, no matter the day time or its location.
The MSI Lightning 980 Ti you mentioned is,
according to TPU 29 db under load which is fairly loud to me. My
previous card, according to TPU was only 25 db under load, and I considered it loud as well (ended up modding it).
Using your standards for high-end cards, the OP can never buy a high-end card, ever. The MSI Lightning and Sapphire Fury Tri-X are the quietest flagship cards ever made.
"MSI has engineered a brand-new triple-slot, triple-fan TriFrozr thermal solution for their GTX 980 Ti Lightning, which is probably the best graphics card cooler I've seen in recent years. During heavy gaming, the fans run extremely quiet, making this the quietest GTX 980 Ti on the market. In idle or light gaming, the fans will stop completely for the perfect noise-free experience. Now, if you think that being so quiet results in high temperatures, you couldn't be more wrong. With only 65°C under full load, the MSI Lightning is the coolest GTX 980 Ti we have tested, making it the fastest, coolest, and quietest of them all at the same time!"
For me subjectively, quiet is anything below 21 db mark and silent below 15 db mark. Feel the difference. 270 is very easy to make silent, unlike 290/390 with at least its double power draw its major PITA on air. I had an MSI 290 Gaming card that many sites considered quiet as well, but of course it wasn't. We have different standards for quiet, and that's fine.
Many WC enthusiasts know exactly what I am talking about.
Ok, that makes it even worse. Using your standards, 99.9% of all high-end PCs are loud. What kind of a system can you make with <21 dBa case fans, PSU fans, GPU fans, CPU fans? You take quiet to the next level.
I am curious to know what PSU and CPU fans you have then?
In that case, I'd go all out and focus on getting a case with sound insulation such as Fractal Design series, etc. To get a high-end system to operate < 21 dBa requires spending hundreds of dollars. Even water cooling may not be a solution since at idle water pumps can be heard.
Reading the OP's requirements, at no point is there any emphasis on <30 dBa operation or any such stringent requirements you have outlined.
It seems your definition of quiet is top 1% of SilentPC users, which is fine but imposing such standards on the rest of 99.9% PC users is extreme.
You said it's not possible to buy cool and quiet R9 290/290X/390 (Fury, 980Ti, etc. cards) but for most people it's not true.
Another point you need to explain is when the GPU isn't playing games, the fans turn off on many modern high-end cards. At the same time, I've never heard my PC while listening to music, watching movies, or playing games with speakers or headphones. To this date I don't understand how anyone can hear their PC while playing games with sound/music on unless their PC is a jet engine. If I use my Logitech 5.1 speakers, Sennheiser IE800, Sennheiser HD700, AKG K7XX, I cannot hear my PC while the game is running and my PC is nowhere near 21-25 dBA. And of course there are also noise-cancelling headphones to take it to the next level!
Anyway, I agree that based on YOUR standards, then any high-end $300+ card is loud but your standards have completely unrealistic criteria for like 99.9% high-end PCs on the market.
I guess if you are used to utter bunker silence, I get it. I've lived in large cities for the last 15 years so even if I insulate my PC to make it as quiet as possible, there is always the sound of cars, street/transit cars, airplanes, trains/metro 24/7, police/fire service, etc.