Re: GTX 780 vs GTX 780 Ti
With the GTX 780 Ti graphics card you will get see utmost 25% improvement while playing games compared to the GTX 780 card. So if you think that it is worth this much, then you can go with the decision based on the information that I have provided you. Other wise the lower priced card will be also good and can give good gaming support as well.
Re: GTX 780 vs GTX 780 Ti
It all depends on you which card you want to buy. I have been using GTX 780 for a month. I actually wanted to buy the GTX 780TI but I am still waiting for its price to be dropped. Because the new card is at launch price so I bought the non-ti model which came down for a huge amount. For a better value card you should try to get GTX 780 and then wait for sometime to let the TI price drop and buy it.
Re: GTX 780 vs GTX 780 Ti
Even I was looking for some answers on this very same question. I found out that 15% performance increase for this GTX 780 TI video card is not worth the money that we need to pay for an extra $200. So, I bought an Asus 780 DirectCU OC which is not fast but still it remains cool and extremely quiet. Now I am also liking it to my preference and dont have any regret at all.