Finally, after several doubts and after 10 years of Intel Hackintosh builds i decided to switch to this new platform. The one who suggested and helped me with this new kind of setup was fabiosun. I'm still testing and not finished my build...it's work in progress but i hope to finish and complete this thread during Christmas Holidays.
My setup is the following:
Case: Thermaltake Level 20XT TK Level 20 XT
Motherboard: Gigabyte Designare TRX40 rev. 1.1 Designare
CPU: AMD Ryzen Threadripper 3970X CPU
PSU: Enermax EPM 1700 EGT PSU
RAM: 256GB Patriot Viper Blackout (32GBx8) RAM
CPU Cooler: EK-Quantum Power Kit D-RGB P360 CpuCooler
Thermal Paste: Grizzly Kryonaut CPU Paste
SSD: 1 Sabrent SSD Rocket NVME PCie 4.0 1Tb Rocket - 2 Sabrent SSD Rocket NVME M2 1Tb Rocket M2
HDD: 1 Seagate Barracuda Pro 10TB HDD
External HD - Lacie D2 Thunderbolt 3 10Tb Lacie
Monitor: Asus TUF Gaming VG289Q 28" Monitor
GPU: Asus GTX 680 DirectCU II 4GB GPU (waiting for Radeon 6xxx XT osx support!)
Thunderbolt 3 card: Gigabyte Titan Ridge Card 1.0 PCie (patched with custom firmware) TB3
Audio Interface: UA Apollo Twin MKII Duo TB3 Audio Card
OS: MacOS Big Sur 11.1 (20C69)
Finally the machine is ready and after several days (due to personal commitments too!) of testing i can tell that everything i need work except some app that require virtualization (like Parallels desktop or Crossover).
Cpu temp are quite low (35°/55° max) because the cpu demand using Native Instruments or other VST plugins is not so high.
Bluetooth and Wi-Fi work without issues, USB ports too. Shut down works with ERP enabled too in Bios. Only if i attach an USB3 hub to any of the rear USB ports after 3 seconds of shut down the system restart. I must still investigate this problem.
But my "victory" is thunderbolt 3....an hackintosh is not a full working machine without thunderbolt! I use a Gigabyte Titan Ridge Card with patched firmware. It's in the last PCI slot, port 7 enabled, it recognizes my audio interface and hot plug works without any issues! I'm using Big Sur, and i've no reset or hangs. Every music production app i use is running without problems, so Native Instruments, Omnisphere Keyscape and Trillian, every VST plugin like Zebra, Diva etc.
I don't use any graphic or video app so i don't need a "big" GPU. I sold my Radeon VII waiting for RX 6900XT support. Now i've an old Nvidia GTX 680 with 4GB....it's native and it's enough for me now!
The only app i cannot use is Parallels Desktop and wine like Crossover. When i launch a Windows machine with Parallels the system restarts. If i use a windows app with Crossover bottles i've exception error with the app.
Maybe it's normal with AMD cpu...but atm i don't care about this issue.
BIos settings are the same as arrakis build. Some voices from 1.0 motherboard rev. and 1.1 are differents. I will try to attach screenshots of my bios settings too.
Attached is my EFI with Opencore 0.65
Thanks to fabiosun for his patience helping me to configure the system, and to arrakis because i took his EFI as sample to start my system after the first setup.
Thanks to all MacOS community too...your suggestions are always welcome.
EFI-TNF-OC065.zip