Just as I predicted -- AMD's AIBs will start clearing R9 280/280X cards shortly and during this small window of time before that inventory runs out, those cards will be a better value than the 285.
R9 280X is $240 on Newegg. Even if 285 is $200, the 280X with 2048 SPs and 3GB of VRAM is going to be better.
So its three problematic games (Watch dogs, wolfensetin, daylight)?
Toyota is actually spot on. When 680 2GB vs. 7970/Ghz 3GB were discussed 2.5 years ago, many feared that 2GB will become a bottleneck in the next 2-3 years. 670/680 2GB cards lasted for 2.5 years without much of a compromise, aside from the games Toyota mentioned and modded GTA IV or Skyrim games, etc. However, to buy a 2GB card
now for $200-250 with plans on keeping it for 2-3 years is just too risky imo because we in the PS5/XB1 and next gen GPUs transition period (imminent launches of 880 and 300 series in the next 12 months). First, GM204 will move the mainstream to 4GB of VRAM. With cards like 280/280X having 3GB, it's just a matter of time before more games take advantage of more than 2GB of VRAM. Also, the games we've played in the last 2 years have been 90% PS360 console ports for the most part. We should see a substantial jump in graphical quality and with it increased demands on VRAM as developers start making games for PS5/XB1 consoles. Games like Watch Dogs are just the start of that new wave.
Every new console generation brings a large influx of demanding titles on the PC. We can't expect the PC gaming landscape to stay stagnant from now until end of 2016/middle of 2017. And honestly with 280X selling for $240 on major sites like Newegg, the 285 2GB is not a good option unless AMD prices it at $189 or something.