@momomo_us on X (Twitter) has unveiled official documentation on a new customized HPCE power connection standard aimed at delivering supplementary GPU power through the motherboard. The documentation reveals all the key specifications of the new connector, including its ability to deliver more than 600W of power, which is even more power than what the new
12VHPWR connector provides.
According to the documentation, the HPCE power connector behaves very similarly to a PCI Express connector. There are four groups of pins in total, with 16 pins dedicated to power delivery and another twelve dedicated to signaling or communication between the mainboard and the graphics card. The connector itself is roughly the size of a PCIe x1 connector.
When utilized on a motherboard, the HPCE power connector resides in line with the primary PCIe x16 slot and sits behind the x16 slot where the motherboard chipset heatsink usually resides. This allows the graphics card to be slotted into both the x16 connector and HPCE connector, making the installation process less complicated. The official documentation recommends not to install a locking mechanism on the HPCE connector itself, since the x16 slot's built-in locking mechanism is already adequate enough to hold the graphics card in place.
