Many people have speculated that the newly announced NVIDIA GeForce GTX 780 Ti would sit between the GeForce GTX 780 and the GeForce GTX Titan, but that might not be the case. According to the Chiphell forums the GeForce GTX 780 Ti might actually exceed the GTX Titan in raw performs as its specifications have been leaked.
If this below screenshot you see turn out to be real the GeForce GTX 780 Ti will have 2496 stream processors, 208 TMUs, 48 ROPS and 3 GB of GDDR5 memory. The core clock of the card will be set at 902 MHz, with a boost up to 954 MHz and the memory will be at 6 GHz (effective).
If we compare that to the GeForce GTX Titan and GTX 780…
These specifications show that with the higher clock speed the GTX 780 Ti may be able to match or even beat the GTX Titan in some tests. Although you have to remember the GTX Titan does have more CUDA cores and twice the memory.
Source: Chiphell Forums | News Archive