Originally Posted by Forceman
I realize that, the comparison I'm making is the driver trying to keep the card from using more VRAM than the game wants to, which is what Nvidia is doing by trying to only use the 3.5GB partition exclusively.
My guess is that a lot of the memory management gains they are talking about are probably geared more towards DX12,since that's been their focus for a while. The question is what happens when SoM tries to force 6GB of textures into a 4GB card, and what tricks the driver has/uses to mitigate that situation.
Edit: and the word coming out of the presentation yesterday was bandwidth only in the double range (which is still impressive, of course).
Edit2: And for the record, I think 4GB is going to work out fine for the 390X because I've thought and said that 4GB is enough (and current VRAM use numbers are inflated) for quite some time, but what bothers me is how as soon as AMD says it, then it must be gospel.
To that end, I can think of at least 4 reasons why they are suddenly talking 4GB is enough:
1. All the new HBM cards are going to be limited 4GB (seems fairly likely).
2. The "regular" HBM cards will be 4GB and the "halo" card (maybe the WCE) will have 8GB, and they want to downplay the difference. (possible).
3. The HBM cards will be 8GB, but since there are only going to be 2 of them they want to continue to make the Hawaii-evolution cards with 4GB with their new memory-management sauce seem advantageous against the 980. (less likely)
4. The want to force expectations low, so when they launch all the new cards with 8GB there is shock and joy. (not sure I believe their marketing department is that smart).Edited by Forceman - 5/20/15 at 7:48am