It’s nice to see apple invent yet another groundbreaking technology. Maybe NVIDIA or AMD will adopt this “monolithic die” concept in the future :laugh:
Does it have the same CPU installed? Did you forget to plug in the 8-pin power cable? (A mistake I make too often). Make sure your RAM sticks are in a proper layout - the service manual will tell you what it should be.
Have any of you ever heard of this motherboard? AOpen AX4B-533 Tube socket 478 board with an onboard VACUUM TUBE! probably the wildest motherboard I've ever seen.
https://www.ebay.com/itm/285756636378