Actually, Vijay Pande's lab has been "folding" proteins in hours to days for years now by massively parallelizing the trajectories:

http://en.wikipedia.org/wiki/Markov_chain_Monte_Carlo

Similarly, David Baker's lab has focused on producing the folded conformations of proteins in hours to days using simplified models that are designed for that task:

http://boinc.bakerlab.org/rosetta/