Some notable takeaways for me:
1) Ares II HD7990 which is essentially a 1.1Ghz/6.6Ghz HD7970s in CF has good performance for its time. It crushes a GTX690 by
28% avg and
39% minimums (!!!) at 1600p; and is not too far behind stock 780 SLI / 970 SLI at 100% textures. Impressive staying power for what are January 2012 videocards. I have to say that HD7970Ghz has proven to be superior to GK204 as far as staying power goes for newer games. For those of us who picked HD7970 CF over 670/680 2GB SLI, looks like we estimated correctly.
2) To run the game at 200% at 1080P or 150% at 1600P,
2GB cards are insufficient. Looks like the era of 2GB videocards is basically done. Unfortunately I think we will still see a lot of 2GB 300 cards and 900 cards. Hopefully with Pascal and Arctic Islands, every card above $199 is 3GB+.
Interestingly enough, it's at 150-200% setting that texture demands cripple HD7990 compared to 780 SLI / 970 SLI which suggests Tahiti was massively texture limited at high rez gaming (hence why we should see AMD increase TMUs on 390X as GCN seems to respond very well to TMU increases --> 256 TMUs is more or less 95% guaranteed then for 390X).
3) VRAM usage is sky high but I can't say the textures are that impressive.
Pretty nuts to see 4GB of VRAM at 120%, which means at 150-200%, if you have the SLI/CF horsepower, you'll likely want a 6GB+ card. Hmm....I think AMD
may be shooting itself in the foot if it only has 4GB of HBM for 390 cards.
4) 280X crushes a similarly priced 960, delivering
27% more performance at 1080P, and more importantly minimums > 50 fps at 1080p!
5) 970/980 GM204 chips are running into a major bottleneck at 4K. Hard to say if it's pixel, texture or shader limitation but 980 SLI completely loses its lead over 295X2. Obviously none of these settings are playable but still interesting to observe for theoretical reasons nonetheless. Considering 980 SLI is just 1 fps faster than 970 SLI, looks like there is some bottleneck there.
6) Kepler has very good performance in this title relative to Maxwell, although since it's still based on an older engine, it's not surprising as Kepler architecture/drivers would have been well optimized for Frostbite 3.
Overall, the game engine/graphics are starting to look dated though. Looking forward to what Dice can do with Star Wars Battlefront and BF5.