Presumably nothing! But I imagine it was might have been impractical, given lockstep method is kind of predicated on "Do it because you can't afford to only com

Presumably nothing! But I imagine it was might have been impractical, given lockstep method is kind of predicated on "Do it because you can't afford to only compute and transmit from a central node." In the era it was used, server chips weren't really a thing. So it was really just "the current decent CPU."