Seems like the primary benefit comes to silicon wafer manufacturing. Growing pure silicon crystal is much easier to do in a microgravity, vacuum environment:

> The study reported that for semiconductor crystals processed in LEO compared to terrestrial samples, more than 80 percent improved in either one or a combination of structure, uniformity, reduction of defects, and/or electrical and optical properties–and some by orders of magnitude

For actual device manufacturing, there are potential benefits as well, but this is less well researched area (possibly as a result of the difficulty of getting advanced IC manufacturing equipment into earth orbit).