4 ms·
To be fair, if you stack them, density is not going up - only if ignore the number of stacks and take one of their areas for the total number of stacked transis
by bigmattystyles 3y ago
To be fair, if you stack them, density is not going up - only if ignore the number of stacks and take one of their areas for the total number of stacked transistors would it then go up.
Plus, stacking is great, but with heat issues, isn't the industry going to many dielets with a massive interconnect?
- reaperman 3y agoHeat issues are very valid. But the "per square inch" density is relative to a square inch of fab wafer. So if it can be done on one wafer, it counts. If it's stacking discrete chipsets, not so much.
- cubefox 3y agoStacking likely wouldn't save substantial cost compared to producing multiple different wafers. It could even increase cost if it decreases yield. That's very different from making the transistors smaller, where the cost per transistor decreased exponentially in the past. People focus too much in Moore's law (transistors per area), when the only interesting quantities are 1) price per performance and 2) power draw per performance.
- grogenaut 3y agoIf measured in square inch the 3rd and more importantly the 4th dimension are not accounted for and are basically free. Another way to say it is to count the famous founder brown: ymmoore wasn't thinking 4th dimensionally. For shame really