MSI has its own TITAN BLACK too.
As you can see it’s a reference card, and expect no other solutions (at least now). MSI GTX TITAN BLACK runs at 889/980 MHz with a memory at 7 GHz. Card is equipped with 6GB GDDR5 memory and 384-bit interface.
In case you missed earlier posts, the GTX TITAN BLACK has GK110 GPU and 2880 CUDA cores. It’s basically a GTX 780 Ti on steroids. This is not a gaming, but multi-monitor users might find it necessary in case 3GB is not enough.