Likely spending the rest of my mini-MAX coin "fortune" lol. Already building 2 6*7950 rigs and just researching what I'd like to do with an Nvidia rig. The new Maxwells are tempting with a ~90 break even and low initial cost.
Also, I doubt AMD has something lined up unless it is very specific to the mining market separate from their GPUs. The R9 290X is already based on their new architecture Hawaii and is very power hungry and hot, so they'll need another approach before they release more, lol.
I actually stopped by here due to this article: http://www.forbes.com/sites/jasonevangelho/2014/02/20/nvidia-is-about-to-steal-the-cryptocurrency-mining-crown-from-amd/
It has a blurb about the r7-265 comparison, similar hashrate 150 watts for the r7-265 and 60 watts for the 750TI.
Anyway I wanted to hear some other's input, thinking of order 6 right now from New Egg to build a test rig, but want to confirm the math. Supposedly 280 kHash slightly OC at 60 watts, heck even a 6 card rig would only need a 500 watt PS, would be saving all around if true.