No, Pcie 8 and 6 pin power motherboards are not compatible.
No, Pcie 8 and 6 pin power motherboards are not compatible.
I used the ROG ZENITH II EXTREME ALPHA with my power supply. I connected the 8-pin CPU port and the 6-pin PCIe slot from the cord. My setup includes a Threadripper 3960x, 64GB RAM, 3600MHz clock, four drives, and a 1080 GPU. The label on the power supply confirms compatibility.
The wiring layout differs and the connectors are secured, making them difficult to place. The EPS connector includes 4 pins for 12V and 4 pins for ground, while the PCI-E has 3 pins for 12V and 5 pins for ground, with the power pins on the other side—inserting it into the CPU connector could cause a short circuit.
The pin configurations are slightly varied, but the connector keying lets you connect the PCIe power cable to the motherboard—just not the other way around. I’m not recommending this change, as they were right about the pin differences; plugging the power into the motherboard could cause a short, but it doesn’t guarantee it will work.
Opened the BIOS using only the 8-pin CPU. Received a notification to boost its performance. Likely to hold off on the Corsair AX1200i until it arrives from Hong Kong. Might get it when my name appears in the queue for my 3090.