Originally Posted by Particle
Optical interfaces will make the situation worse instead of better. As a technology it has many good traits, but cost and ease of engineering aren't going to be among them for this use case.
You dont need as many "pins" with optical though since you can send multiple modulated wavelengths through the same fiber. You also wouldnt need positive and negative pairs for noise rejection. You dont even have to run lines through the MB at all. For ATX form factor chassis compatibility, just have blank slots on the board for mounting location of the card with a optical connector near the CPU that you plug a cable into between there and the add on card. This could lead to future chassis form factors where GPUs wouldnt even need to mount the same and you dont even need the slot area on the MB since it just plugs in with a optical cable. No traces through the board and not needing nearly as many pinouts would save a ton of money on board design as well as space. The only thing this wouldnt work for is m.2 SSDs, but Im sure a solution could be thought of for connecting into them as well. Especially if we move to a different form factor and you dont have GPUs covering up MB space where SSDs would mount.
Last edited by EniGma1987; 06-19-2019 at 07:11 AM.