This Dell Optiplex 9020 was refurbished, and had the specs I was looking for at a fraction of the cost of a new computer. I am using it for business, but plan to run cloud based slicer software on it for a workhorse 3D printer. I bought an extended warranty for it, which gives me some peace of mind should it breakdown. I've only used it a little so far, but was able to activate Windows easily enough and it seems fast enough for what I intend to do with it.