For me, as an extremely non-techie senior, this was a quick, easy out-of-the-box set-up and fast boot up. This HP ProDesk 600 was purchased to replace a slowly dying HDMI tower. I play a lot of casual games, watch movies, tv shows and YouTube, plus cruise around the internet. I really appreciate the responsiveness of the HP. I cannot testify to the hardcore gaming that my sons do, but this HP performs well for my tame casual games. Despite being a refurbished unit, it looks brand new.  It came well packed with sturdy styrofoam buffers and a card with the contact information and work hours of the seller. Also included are a keyboard and wired mouse. (The wired mouse is actually performing better than the wireless one I have.) There is only one tiny complaint I have and that is the disc drive is somewhat sticky. But, hey, that's livable, right? It is such a great price. I feel I really struck it big time! I have an ancient HP Compaq that's still kicking despite being painfully slow (also a refurbish purchase) and hope that this ProDesk will be just as lasting. I am beyond pleased!