So at 80MH/s you right now would be generating about 227.74 coins per day on 4/8/14. HVC is currently trading at 0.00002933 so that is 0.006679589 BTC per day. BTC right now is at $452 so your rig is earning $3.02 per day on average before expenses. 880W is 21.12 kWH per day. If your electric cost is 13 cents (with all taxes included) that is $2.75 in cost per day. You are making $0.27 per day mining HVC at present. If you figure any type of depreciation or any other factors then you are most likely loosing money mining HVC at present. You will never get an ROI at present profit levels. So why mine HVC at present if there are other coins much more profitable? You could always use that money to purchase HVC if you think it has a future. Profitability would be higher for 750ti users as the power requirements are lower, but again, why not just mine a different coin that is more profitable?
Technically still profitable to mine.
I run the same math as used in my quoted response from 4/9/14:
So at 80MH/s you right now would be generating about 444.07 coins per day on 4/11/14 as I type this. This is because your 80MH rig now owns 80/7419 of the network instead of 80/14720 (4/9/14) of the network. HVC is currently trading at 0.00001957 so that is 0.008690542 BTC per day. BTC right now is at $405.2, so your rig is earning $3.52 per day on average before expenses. 880W is 21.12 kWH per day. If your electric cost is 13 cents (with all taxes included) that is $2.75 in cost per day. You are now making $0.77 per day mining HVC at present.
Profitability will be higher for T750 miners since they require only about half the wattage.
Other things that might be worth noting:
One can hope that many of the miners who have dropped or those that will drop when they think it's not profitable will have high vote settings.
By sticking with HVC and using a proper vote count each of us has far more control over the outcome of voting and can help to push the coin voting in the direction best for longer term survivability.