It's unusual that x86 and Linux, which are generally not considered to be reliably and robust under an extreme environment, are used here. But since it's developed by SpaceX, it makes sense - move fast and break things, use off-the-shelf commercial systems as the basis to reduce costs.

Anyway, I think it should be more interesting to compare it with a modern rocket that uses a more specialized computer system, VxWorks comes to mind.