Sorry, how many chiplets were AMD trying to jam into that cancelled next-gen GPU?!
There's a freshly leaked image of a Radeon chiplet GPU design—reportedly from a now-cancelled Navi 4C die—and it's rocking anywhere between 13 and 20 different chiplets on one GPU. I love a bit of ambition, but I think we're starting to see why AMD really might be calling time on competing at the high end in its next graphics card generation.
The GPU design schematic has come from the Moore's Law is Dead channel (via Videocardz) and shows a hugely more complex chiplet design than we've seen in the current Navi 31 silicon that powers the Radeon RX 7900 XTX. That was the first chiplet GPU in the gaming space, and honestly I thought it was a minor miracle AMD had managed to get the card working as well as it did as a gen1 implementation of the tech.
It must be said, though, that it wasn't necessarily a true chiplet design in the same vein as AMD's recent Ryzen processors. Those processors use multiple compute chiplets—multiple dies with multiple CPU cores on each—along with an accompanying I/O die to take care of the interconnects. The approach with the latest Radeon, on the other hand, is still chiplet-based, but only contains a single compute die with separate memory cache dies as the discrete chiplets.
This leaked Navi 4C design, however, is something else entirely. It's an order of magnitude more complex, with multiple compute chiplets as well as separate I/O and memory chiplets, all arrayed on a single substrate.
The image displayed on the Broken Silicon show only has one horizontal shot of the design, and even then it's showing 13 distinct chiplets, with MLID stating there will be memory controller chips not shown in the image, which could push the figure up to 20 or more.
By way of confirming the veracity of the
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