Yesterday I looked at the x11-x15 algos again. I have found some improvements.. The next version of the private miner will have a boost in x11-x15 , qubit , whirlpool, whirlpoolx and perhaps quark.
Can i have a HaleLuja!
Oh shit, i only have AMD cards

A wellcoded x11 kernal should be able to do 4-5MHASH on the 750ti @ 50 watt. I haven't done any work on the x11 kernal in 1 year.. With my code your old AMD cards will be obsulete.