Why are the results of the Coinish Bitcoin calculate so grim? I am currently investing into a new gaming PC with a Radeon HD 7990. According to objective reviews (e.g. ExtremeTech Review) this card outperforms many the competitors on the market, especially when it comes to bitcoin mining.

When I played around with the expert settings of the Coinish Bitcoin calculater, I quickly realized, that even with my cheapest energy provider (~0.1$/KWh) I will not be able to break even, considering the price of the card.

In addition I tried the same calculation with the values of high-end asic devices that I found available online, similar results.

Is this calculator too pessimistic or is it really not possible to expect a solid ROI with high-end hardware (GPU or asic) at the moment (End of 2013).
I started around March with 2 GPU's. My electricity is free and bitcoin price has tripled since then. I still haven't come close breakeven.

Back then I knew it would take a long time, and I knew the ASICs were coming. I did it purely out of interest and fun.

There really is no other reason to start GPU mining now. Even with everything free, it's just wear and tear on the hardware.

So the answer is: that calculator is probably right. Math doesn't lie, I guess.