In the world I'm building, set roughly 350 years in the future, the humans have colonized the Solar System and other systems beyond using a hyperlane network discovered at the edges of the Solar System.
However, the story revolved around a data courier for one of the governments on the home planet, Xanthos. Thus, I want to pay extra careful attention to the details about the courier's job. The ship he drives runs off of computers with graphene CPUs. Is this feasible, if say humans were mining significant amounts of methane off of Titan-like planets and then someone figured out a good way to induce the oxidative coupling of methane to produce ethylene. The ethylene would then be mixed with oxygen and then ignited to create graphene.
What I'm wondering is, is any of this realistic? If so, how would such a CPU work? What would its clock speeds be? How fast could it read and write data given a storage device of 10 petabytes connected via a PCIe-like cable with 8 data lanes?
A character in my story is the pilot of said data courier. Because in this world large amounts of data can’t be sent through the hyperlanes because the breach points can’t be opened for long, ships loaded with hundreds of petabytes of data travel between systems. This ship is loaded with 50 sets of six 20 petabyte, military grade SSDs that use a data interface system that I like to call reversible PCIe x8. The on-board computer is able to access and load any one of these drives in nanoseconds, and can remotely wipe all the drives with randomized bits in a few milliseconds.
How feasible is any of this with the timeline i presented? Would we even be using SSDs? Does the bus width have to be longer? Are all of my assumptions about the future of computing implausible? Am I underscoring it? Overscoring it?