I bought this 990 as a replacement for my WinXP (gasp) machine that was on the edge of dying for 5 years. I was skeptical of buying a refurb because some stories are really bad about them though likely those are fairly rare. My intention is to install a gpu and new power supply to allow for 3D rendering and light CAD work along with some gaming and this rig is perfect for that.Amazingly, when I opened the case to install a new SSD for the OS and other intensive programs I thought there was some mistake. The case and all fans, boards, cable, literally everything were spotless. The machine looked brand new with absolutely no dust anywhere...not even inbetween cooling fins or under boards or in cracks or crevices. Astounding. It seems as though the machine WAS either brand new or the company who refurbs these goes all out...and I mean all out...cleaning them.The HDD is an older model and using crystaldisk I saw that it was used and powered on a bunch and left on even longer, but that was to be expected. All of the other components looked new though so I am thoroughly confused. Unless my unit was used in a clean room I don't understand how they got it so clean.Obviouslly I'm happy with the computer and it really is a bargain for what you are paying for. With upgrades totalling around $150 (depending on GPU) you can have a really capable 3D/CAD/Gaming rig for under $400 with a good GPU, an SSD and a new more than capable PSU.