The G2020 is a mighty slow CPU. If you are programming for a living you should be able to afford more than $60 on a CPU. It is a tool of your trade (and a tax deductible expensive if you are a programmer).
AMD A8-6600K is marginal better.
What about a AMD FX-8150 or AMD FX-6350 instead?
Or maybe a Intel Core i3-4340 / 4130. Still only 2 cores, but excellent single threaded performance.
You might even be better off looking at second hand systems, like a 3 year old Dell i7-920 Desktop for ~$400