@Herbaleyez , welcome to the Community.
Here are the specifications for the RTX 3070 from nVidia: https://www.nvidia.com/en-us/geforce/graphics-cards/30-series/rtx-3070/
According to this information the card requires 650W and 1x PCIe 8-pin Supplementary power adapter (adapter to 1x 12-pin included). Now, each manufacturer may have their own specifications. You should check before giving up on the card.
I suggest that you choose a manufacturer and contact their Tech Support for help with choosing the best card for your system.
Please click the Thumbs up + button if I have helped you and click Accept as Solution if your problem is solved.


I am not an HP Employee!!
Intelligence is God given. Wisdom is the sum of our mistakes!!