This vintage Dell Optiplex GX400 home computer boasts an installed Pentium 4 32-bit CPU with a 1.8 GHz processor speed, 512 MB RAMBUS installed memory, and an 80 GB hard drive capacity. The unit comes in black and is sold as a single unit. The model is Optiplex GX400 and the brand is Dell. This vintage computer is perfect for collectors or for those who want to experience the charm of the past. It is sold without an operating system, but it's easy to install one of your choice. The unit has been well-maintained and is in excellent working condition.