The card should get enough power but HP doesn't give that info in the specs, mainpower must be 300W or more.
But with a pci 3,3V soundcard and pcie X1 usb3.0 card i can see that the power is limited for the video card, this videocard takes 19W
The onboard Matrix video chip is only shared 32Mb mem.
There are only 2 pci-e x8 cards on the market, the Geforge Gt710 1Gb or 2Gb
What can i do? Build in a mainpower with 500W instead of the 365W standard?