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Pemalite on 26 January 2021
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JEMC said:
Pemalite said:

It would be built at 5nm TSMC, it should be half the size, if everything else is kept equal of course.

A large part of the chip is cache and logic which could continue to be built at 7nm and likely live as it's own wittle chippy.

Jumping on a new node won't make it better because the yields will be low and the chiplets will still be relatively big.

If they went with 40CU instead of 80, the situation would be better. Not only the smaller size would make for better yields, but it would give AMD a better starting point allowing them to make cards with 40, 80, 120 and even the 160CUs of the rumor, enough to make a whole range of cards.

Once you move the caches, video decode engines, fixed function units and more onto it's own separate die, 80CU's would definitely be more than viable.

Either way, AMD is playing a longer game here, so they may be willing to take a hit on yields initially if it meant something more promising long term.




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