I voted Meh for both.
Architecture looks good, Fermi2 could potentially be a winner (much like R600 -> R770), as long as nVidia manages to work out the kinks and start executing on timely basis.
For now I'm not impressed, 10-15% extra speed for 30% extra price, along with much more power, heat and noise? No thank you, even if Fermi would be priced on the 5850/5870 level, I still would think twice before picking them instead of 5800 series, but at least they would be competitive, they are not at the moment. Small initial batch is meant for the fanboys-only IMO.
Picture this: according to Techpowerup:
http://www.techpowerup.com/reviews/N..._Fermi/32.html
Difference at 2560x1600 is 7% only, 5870 with 2GB will shave few more %, and AMD could easily boost clocks of picked chips 10-15% more, and launch 5890 2GB
tomorrow at 499$, and in bigger quantities than Fermi.
And thats not even talking about a real refresh, AMD had almost a year for it (Evergreen chips were ready way before launch, AMD waited for TSMC to ramp up).
The question is - will AMD launch 5890 2GB with higher clocks to finish Nvidia off for this generation, or they wont bother, and just milk 5800 series till NI shows up in the 2H?