Micro ATX Gaming PC for 797.90, Best bang for your buck,
Comes with: 
Case; ThermalTake Versa H18 mATX Case w/ Tempered Glass side panel
Motherboard: MSI B350M Micro ATX Motherboard
Memory: Kingston HyperX Fury DDR4 2400 white 8 GB of ram
Storage: 120GB SSD to Boot, 1TB HDD for mass storage
CPU: AMD Ryzen 5 2400G
Power Supply: Corsair CX450M semi modular power supply
this set up will run most games med-high graphics at 60fps on a 1080p display. will work for multiple display work stations
For each additional 8gb of ram add $120.75 max up to 64GB
Make it yours, this is a small form factor PC will fit virtually anywhere and with the upgrade path it is definitely an investment, whether you are planning to game, or use it for work.
Also with any build from PCPC you will receive your free promotional mouse pad