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Weren't "3D chips" a thing? Did that take off/used anywhere. Sounded like a big deal along with the idea of smaller = better.
by ge96 4y ago
Weren't "3D chips" a thing? Did that take off/used anywhere. Sounded like a big deal along with the idea of smaller = better.
- dragonelite 4y agoYou're still limited to thermal and cooling capacity if im not mistaken.
- iasay 4y agoYes it’s used in FLASH now. Look up 3D NAND. It’s mostly hopeless for compute though because it’s difficult getting rid of the heat.
- mook 4y agoThere's "3D V-cache" now too (cache on top of compute, or something along those lines).
- audunw 4y agoTransistors are more "3D" now, that's why a 10nm process gives you something like the same density as what a 2D planar transistor with 10nm minimum gate length would. See "FinFET" or "GAA" transistors If you're talking about stacking entire chips, yes that's also used lots of places. The challenge there is getting rid of the heat from those chips. If you stack lots of chips it gets really hard to get heat out of the ones in the middle.
- tonmoy 4y agoIf you are referring to 3D devices like FinFET then they are absolutely a thing and is being used pretty widely. If you are referring to stacking devices in 3D space then the power density becomes too much and it becomes impractical