Well AMD has the option to if necessary slap an enthusiast grade cooler on a prosumer variant of the card which I believe was designated to get HBM anyway which should have a 512 bit bus.
Maybe thats enough to hit there goals maybe not. If not I doubt we will see that card but you never know aka radeon 7.
Doubt board partners/aibs would know about this therefore be able to leak this as iirc radeon 7 was ref only so AMD can play that card close to the chest so to speak.
If that happens and this is just my 2c I think AMD might have underestimated ampere as I personally don't think AMD would go the HBM route on a top tier after fury/vega/7.
The gddr 6 cards are more than likely 256 bit as just from what I have seen electrically speaking layout wise nothing else would make sense.
I guess its not impossible but i'm going to say highly improbable that a 256 bit bus card is going to dominate a 3080/3090.





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