IgorsLAB published NVIDIA Ampere RTX 3080 and 3090 with 12-layer PCB and backdrill
A quote from the article:
I had already written extensively in February about the new board requirements and the more complex manufacturing process. And thats exactly how it happens now, so Ill go into it in more detail in a moment. But for many people, the actual state of production is certainly much more interesting.NVIDIA Ampere RTX 3080 and 3090 with 12-layer PCB and backdrill