Guinness World Records has recognised folding@home (FAH) as the world's most powerful distributed computing network.

FAH has signed up nearly 700,000 PS3s to examine how the shape of proteins affect diseases such as Alzheimer's.

The network has more than one petaflop of computing power - the equivalent of 1,000 trillion calculations per second.

"To have folding@home recognized by Guinness World Records as the most powerful distributed computing network ever is a reflection of the extraordinary worldwide participation by gamers and consumers around the world and for that we are very grateful," said Professor Vijay Pande of Stanford University and a leader of the FAH project.