In its full teardown of the iPhone X, iFixit found the device to be drastically reconfigured inside to maximize performance in the smallest space possible. The stacked logic board is of special interest, taking up only around 70 percent of the space of the iPhone 8 Plus’ board but cramming in even more chips and connectors by being folded in half. That design leaves more room for the two battery cells that give the iPhone X a small edge on the…