My HP ProDesk 400 G9 SFF has a 6-pin power output (P160 SATA Power) on its motherboard to deliver power to HDDs and other SATA devices. I wanted to know if it's possible to use this socket, with some modding, to deliver power to a discrete GPU. The power supply is rated for 240W, and the CPU is rated at 65W. I believe there is plenty left that could be used to operate a 100-120W GPU.
I've come across SATA cables to PCIe 6-8 pins online, but I'm wondering why not utilize the pinout on the motherboard directly instead of adding a potential weak link in the middle?
I'm aware that SATA power is rated to deliver 54W, and this board has 2 SATA ports, plus one that isn't soldered (the 600 variants have it soldered) so theoretically, it should be able to output at least 54W x 2 = 108W
I haven't verified the pinout voltage with a multimeter yet, but since it's SATA and the cable going into it is color-coded, it should have the correct voltages. My question is, can I safely wire these voltages to a PCIe 8-pin cable?
I've come across SATA cables to PCIe 6-8 pins online, but I'm wondering why not utilize the pinout on the motherboard directly instead of adding a potential weak link in the middle?
I'm aware that SATA power is rated to deliver 54W, and this board has 2 SATA ports, plus one that isn't soldered (the 600 variants have it soldered) so theoretically, it should be able to output at least 54W x 2 = 108W
I haven't verified the pinout voltage with a multimeter yet, but since it's SATA and the cable going into it is color-coded, it should have the correct voltages. My question is, can I safely wire these voltages to a PCIe 8-pin cable?