I guess I can call this a success. Yes, I’m still waiting for the graphic card to 4pin adapter cables, but it’s running fine using motherboard headers and emulating same fan curve via FanControl software with same 0dB operation below 55°C and with very aggressive fan curve with 100% at 75°C and it usually never even hits that. Testing fans at 100% (2000 RPM) and they are audible, but they are like night and day compared to stock fans. Not only they push significantly more air thanks to thicker fans, they aren’t whiny at all. All I can hear is basically just air rushing through heatsink fin stack and it’s really inoffensive noise.
The prototype printed parts didn’t show any change or deformation from heatsink and heatpipes heat so I’ve just gone ahead and printed the full fat parts. The front took me 3 hours to print, rear part good 2 hours and each of four links on top took 10 minutes.
I’ll post an update when I get the adapter cables and how I’ll hide that to make it visually appealing. See you in about a month when the cables come from China 😀