@Cielodiluna di Bisanzio I will explain what do I mean with this whole Titan thing. It is the largest moon of Saturn, which despite unfriendly conditions for biological life as we know it, may in the future be the major industrial and computing centre of the Solar System. It is also one of the richest reservoirs of readily available nitrogen, hydrogen and hydrocarbons, goods relatevily scarce in the Inner Solar System, and of which huge quantities will be needed to build artificial living spaces resembling the Earth. Therefore, Titan might be one of the major nodes of the future Sol trade network. But, paradoxically, the most important resource of Titan may be its extremely low temperature. The average temperature on the surface of the moon is about 98.3 Kelvin, compared to 228 Kelvin on Earth. This means that the very same thermal engine on Titan can achieve up to 3x higher efficiency than on Earth. Low temperature also allows you to achieve much more computing power. Due to the Landauer principle, switching one bit on Titan requires providing energy of just one zeptojule, that is, a processor with a clock frequency of 1 GHz, could work with a one billionth of a Watt. It can be assumed that Titan's energy budget, allowing the moon's temperature to remain at a relatively constant level, is 31 trillion watts. If the computers use only one of these trillions, it allows for a quadrillion GHz CPU. It is commonly assumed that from about 10 to 100 million GHz is enough to emulate the human brain. So, using only a few percent of Titan's energy budget, you could operate a supercomputer capable of emulating all of today's humanity, a million times over.
