Pros: Let me first say that I do not recommend what I'm about to explain as daily usage. I bought this PSU to power a Z97 system with a single GTX 780TI with a custom liquid loop. More than enough for that. Did some benchmarking and such and never topped 500W. Decided to buy a second 780Ti before they become prohibitively hard to find. Ran a 3dMark Fire Strike benchmark just to see how everything would do, and the thing topped out at 1153W continuous for almost 5 minutes. During normal gaming (heavily modded Skyrim) the thing doesn't top 600 with two GPUs, but the fact that it was able to go over 1100W without catching fire (and without any damage to the PSU either) should tell you all you need to know about the quality of the build. Highly recommended.

Cons: I have to buy a bigger PSU to handle my second card.