NVIDIA may have a tight lid on its GeForce Titan graphics card, but its OEMs don't seem to. ASUS, at least, has leaked quite a bit of information on it.
In all fairness, though, it isn't ASUS so much, but online retailers and random forum visitors.
Last week we got a tentative description of the performance, but now we have new information, some of which contradicts previous reports.
While no one is denying that the Titan will have 6 GB of GDDR5 VRAm and GPU boost technology, new online listings say the memory interface will not be of 384 bits, but of 512 bits.
Then we have the completely new information about the clock speed of the GK110 GPU: 915 MHz base clock, 1019 MHz boost (6 GHz for the RAM).
Quite a bit above the previously reported 732 MHz.
This is all that bears mentioning at this time. We will keep an ear to the ground for more data.