4 ms·
Let's be honest, putting the hottest part at the top of the chip where it can be in contact with the heatsink is not the kind of thing AMD could have failed to
by fancyfredbot 2y ago
Let's be honest, putting the hottest part at the top of the chip where it can be in contact with the heatsink is not the kind of thing AMD could have failed to think about until now. There's surely some reason why they didn't do it this way in previous generations? Does anyone know why?
- kimixa 2y agoOne thing mentioned is that the cache die is now the same size as the CCD, when previously it was notably smaller and "dummy silicon" used to fill in the gap and get everything to the same height. I can see "stacking" larger dies on top of smaller being extremely difficult to align. Perhaps the trade off was made to allow a smaller cache die (so lower cost) at the cost of requiring it to be "on top".
- justinclift 2y agoMaybe the size change was to ease the via design? ie between the pins on the bottom and the cores above
- soganess 2y agoThe Gamers Nexus video on the 9800X3D said that previously, X3D SKUs were kinda skunkworks things that happened after die development. And that they have wanted to do this since 2019. Zen 5 is just the first time they had a chance to implement it because the X3D team had input on die design.
- throwaway48476 2y agoRyzen X3D was the skunkworks project not 3d cache. X3D was developed for HPC and EDA industries. They also had plans for 3 hi stacks but I guess a customer for it never materialized.
- seanw444 2y agoI wish they put the kind of effort they put into Ryzen, into Radeon. Legitimate ray tracing competition, and something at least approaching what CUDA does. I know they already do ray tracing, but the disparity is large. And I know they're already working on GPGPU tooling, but seemingly at a snails pace.
- zaptrem 2y agoIMO ray tracing remains a gimmick and the die space would be better spent on more normal compute hardware. Basically every game that doesn't have a day/night cycle can prebake their lightning and have it look nicer than any possible real-time ray tracing. Ray/Path tracing does look nice in Cyberpunk, though.
- IshKebab 2y agoYeah the reason is the cache doesn't need any connections outside the chip, and those connections are on the bottom. With this solution they now need a load of vias going through the cache die to the pins at the bottom.