The Titan can run up to 17.59 Petaflops a second.
A Petaflop is about a quadrillion (a thousand trillion) calculations.
Titan is made up of 560,640 processors and 261,632 accelerator cores.
The computer not only calculates so much so fast, but it uses less than twenty megawatts of electricity, for each Petaflop.
Don't be worrying about getting one for home, quite yet, the supercomputer takes up a rather large area.