Nvidia GPU patching on ASUS P5Q-SE

Hi guys, I successfully installed High Sierra 10.13.6 on an old LGA775 motherboard.

Specs:

Mobo: Asus P5Q-SE (no integrated GPU)

CPU: Intel Xeon E3110 @ 3.00 GHz

Bootloader: Clover r4334 (legacy mode obviously)

GPU: Asus GeForce GTX 560 Ti (Fermi) (nVidia Web Drivers working fine on DVI output)

RAM: 7 GB

Hard Drive: Kingston 120 GB SSD SATA

Here's my problem: everything is working fine (to use ethernet i had to use a PCI ethernet card because the integrated one is not compatible) except the HDMI output on the GTX (i already read many guides about solving the problem but no one about mine); i know i have to patch the gpu but i can't find any guide for patching it when you don't have the integrated one.

Can anyone help me? thx