The first season start of well with lots of cool dramatised hacking and startup culture scenes. But near the middle of the first season it had turned into a unbelievable soap opera with a bit of tech as a backdrop.
See, this is interesting, because I found Silicon Valley puerile and delinquent -- too many dick jokes -- whereas Halt and Catch Fire is a little more intelligent. Generational difference? Possibly: I grew up with computers in the 70's.