Well that 'joke' of a card is getting an extra 15 FPS over the 980ti in the newest AAA game on the Market with DX12 - Deus Ex MD.
Alright, surely the fact we are not comparing 4GB of GGDR5 to 6GB of GGDR5 VRAM means it's not as simple as you state. The Fury cards have High Band Width VRAM which is 3 times faster than GDDR5. I wish I knew the formula to normalise the performance of the 2 memory types to allow for a like for like comparison.
Put it this way; if you have 2 identical cards, with the same VRAM capacity only one has GDDR5 memory and the other has the 3 times faster HBM memory, which one would you expect to perform better? So at what point does having more slower memory outperform less faster memory and visa versa. Logic would suggest that the extra speed from the HBM VRAM must offset the smaller capacity, would it not? Does anyone actually know how to do a fair comparison? I'd love to read it.
I have a Fury X which is
only 4GB of VRAM, yet where once it was fairly even performance with the 980Ti, it is now pulling away in the newer games utilising DX 12 & Vulcan. When I was choosing which card to buy a few months ago, I too was put off a bit by the Fury 'only' having 4GB and considered the 980Ti also with its 'larger' memory but the fact is I've yet to see any evidence of this holding the card back in terms of performance.
Facts are facts and there are lots of benchmarks out there indicating a trend that the Fury cards with their HBM memory are seeing significant performance gains with the newer APIs. In contrast, the 980Ti is going the opposite direction. Maybe that has nothing to do with the size/type of VRAM, maybe it's to do AMDs built in ASYNC computing but regardless, it's hard to argue the Fury cards are not getting better as time goes on and therefore could reasonably be considered more 'futureproof'.
I'm no expert and perhaps there are other contributing factors I am ignorant too, however based on what I know, I do think my advice to consider a Fury card is pretty sound and if that merits a reward, I'll humbly receive it.