I think the 780Ti's value is questionable.
The EVGA 780 (967MHz base) costs $500 and also beats the Titan. How much faster is the Ti for $200 more?
It's also interesting to note that the same EVGA arguably beats the 290X.
And if you want to really get excited about PC gaming then read about G-Sync. If it doesn't excite you then it's probable you don't understand it fully.