Energy cost is not a problem as I have mining in a place where I only pay 0.07 USD/kwatt from 0.16 USD/kwatt which is the main price in my country. Nvidia here has the same resell value as ATI. My 750 ti only pulling 45-60 watt when mining LBRY so not a big problem the energy. The new problem started only today as the difficulty increased with 300 GHS in the LBRY network so my profit is down drastically. Thinking to switch to Nicehash miner when I get my GTX 1060 as their calc is showing 2 USD per day profit for card.
@szafa you can use USB-PCI-E extender/risers like I will do cause I also have no other place in my motherboard. They cost cheap about 5 Euros at ebay.