So this is a monster of a machine albeit several years old. 1000W Power Supply, tons of fans, AZZA full-tower. Intel i7 8700 CPU and 16GB Ram (2x8GB, 2 more slots available). ASUS Z730 Killer Motherboard can handle 2-GPUs. There are 2 DVD Drives in the unit as well which is a throwback but unusual these days. I've included a 160GB SATA HDD but no O/S is included. Unit is super heavy hence the higher than usual shipping cost.