Prices include shipping, taxes, and discounts when available
*Lowest price parts chosen from parametric criteria
Generated by PCPartPicker 2017-04-28 13:06 EDT-0400
I reused as many things as I could.
CPU: Ryzen 7 has 8 cores and 16 threads making it perfect for any of the workstations tasks you're doing. The next equivalent Intel CPU is at the $1000 point making this one a very cost effective one. It is also overclockable with the stock cooler if you want to, otherwise it should perform brilliantly. Gaming isn't quite as far as Intel but as you aren't doing anything too demanding, it will be absolutely fine (5 - 10 FPS loss compared to Intel perhaps.)
RAM: Your old RAM is DDR3 which isn't compatible so I replaced it with DDR4. Higher RAM speeds scale well with Ryzen so DDR4 3000 is always a plus. 16GB should be enough for your uses as well but it's always upgrade able just in case.
Storage: Reused your old SSD/HDD
GPU: The GTX 950 is still a pretty good GPU for any of the games you are playing. It should be worth reusing it for anything at 1080p
CASE: If you click on this PCPartPicker part list
it will take you to the list of parts on PCPartPicker. Look to the case and click parametric filter just below it. Any of the cases on that page will serve you well and they are all compatible. Just make sure it's well reviewed and you like the design.
PSU: The G3 is a well reviewed PSU which is fully modular and gold rated if it matters. Should last you a long time.