The Pentium G4400 should do. Decent performance for general business needs, low power consumption, $50 under your budget, plus it uses the new skylake architecture. The G4400 may not be a beast, but it would get the job done.

Typically what I would do is ask the person I'm building the pc for what their habits and routines are when using their pc. Then you can look at the programs they use and determine how much each program would consume the CPU.

https://www.amazon.com/dp/B015VPX05A/ref=asc_df_B015VPX05A4524847/?tag=hawk-future-20&creative=394997&creativeASIN=B015VPX05A&linkCode=df0&ascsubtag=hawk-348218449-20

The Pentium G4400 should do. Decent performance for general business needs, low power consumption, $45 under your budget, plus it uses the new skylake architecture. The G4400 may not be a beast, but it would get the job done.

Typically what I would do is ask the person I'm building the pc for what their habits and routines are when using their pc. Then you can look at the programs they use and determine how much each program would consume the CPU.

https://www.amazon.com/dp/B015VPX05A/ref=asc_df_B015VPX05A4524847/?tag=hawk-future-20&creative=394997&creativeASIN=B015VPX05A&linkCode=df0&ascsubtag=hawk-348218449-20