Well I have considered giving up on the mining and selling the rig, but I live in hope of a ROI. other people have said about 750 ti.. I always thought AMD cards were best for mining, also not sure how to fit them to the rig yet. I've got risers I can use but its about having a place to put the card in a HAF-XB case has anyone used Sapphire Vapor-x cards?
I have a vapor-x 270x and it runs cool and hashes well, I get around 210-220 kHs. I do get a few HW's a day, but still manage to average around 200 WU's. I haven't used a 750 ti, but I understand that the new Maxwell architecture hashes well (I'm curious to see how the rest of the lineup does).