Wow, if mitochondria need to be modeled in that level of detail for accurate simulations of neurons that could be problematic. Exaflops of computational power were already the estimate just for simulating the neurons/synapses of a human brain[0], and this would increase that computational requirement orders of magnitude I imagine. Still quite fascinating.
[0]http://www.riken.jp/en/pr/press/2013/20130802_1/