Power efficiency is nice but the number doesn't change that much, you need 10 chips (600$?) to outmatch a 280x (300$?), yes power is the key but this is not "a game changer" just a shift in power consumption, the kh numbers are pretty much the same.
Du(al)-Coin mode up to 1.75G/s BTC Hash Rate + 60K/s LTC Hash Rate, or up to 2.25G/s BTC HashRate + 38K LTC Hash Rate
comes with 1.75GH/s of BTC hash rate as well..when running 60Kh/S LTC, doubt one 280x can do that?
Yep that's a neat feature, doesn't concern the ltc network at all though, ppl react like this will really hit the ltc network hard but in fact, it doesn't change much at all, availability will suck as usual - you need 1,058,750 chips to just double the current diff and bring it up to 4200...
Don't get me wrong, i'll most likely buy some of these since it's really really nice to have but it won't change things as much as most here tend to think.