I connected my RTX Ti G. X tr. with 750 Watt be quiet! Straight Power 11 Modular 80.
PCI 1 + PCI 3 (8-pin) and as 6-pin , used the second strand of PCI 1.

The graphics card runs and lights up, but I can't see anything on the screen.
With the onboard card I get a picture.

Now I'm not sure about the connections, because my power supply doesn't have a pure 6-pin. All cables always end in 6+2.
Also the exact series voltage from the power supply output to the graphics input as a 6-pin?

Question

I connected my RTX Ti G. X tr. with 750 Watt be quiet! Straight Power 11 Modular 80.
PCI 1 + PCI 3 (8-pin) and as 6-pin , used the second strand of PCI 1.

The graphics card runs and lights up, but I can't see anything on the screen.
With the onboard card I get a picture.

Now I'm not sure about the connections, because my power supply doesn't have a pure 6-pin. All cables always end in 6+2.
Also the exact series voltage from the power supply output to the graphics input as a 6-pin?

Answer

Try switching off your onboard graphics in the BIOS and unplugging the cable.
I used three separate PCI cables because the card draws 330 watts. If only two cables are connected, the card should not start at all.

Your data. Your choice.

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