- Jan 28, 2020
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MCM isn't a magical secret sauce that will miraculously make RDNA3 way more power efficient; it's simply a way to make larger GPUs without running into the issue of yields or other limiting factors (such as reticule size). So think of the benefits of MCM as just the benefits of having larger silicon areas and nothing more. But having a larger total silicon area can bring a lot of obvious benefits, and the fact that AMD cites MCM as a factor in their supposed 50% power efficiency boost tells us how they plan to utilize that extra silicon... for now, at least.
Cutting the large dice into ever smaller slices is production cost reduction, not IPC or performance related exercise.
But it may have a slight background advantage of improving the qualities of the overall solution, my guess is not more than 5% overall.
I mean better thermals, improved management of the integrated parts.
The audio processors should be cut altogether, I don't understand why the GPUs must include audio device which costs transistors on the dice.