apparently one 750 ti can do the same hash as the 280x, this is insane, the amd x11 miner need an optimization
We really do need an AMD optimization really badly. My friend has 750Ti rigs and he is getting over 2MH on each card for about 50 watts per card with ccminer. My R9 290 does 2.5MH for 200 watts. Looking at how the 750Ti does in regular scrypt compared to the 290 there is definitely room for optimization here.
Otherwise its probably cheaper to sell all the AMD cards at a loss and pick up 750Ti cards. They are over 3x as efficient right now.