Dell OptiPlex 755 Core 2 Duo E7200 2.53GHz 1GB 80GB CDRW/DVD Vista Business Small Form Factor Dell OptiPlex 755 Core 2 Duo E7200 2.53 GHz Small Form Factor General Features: Small form factor system Black and Gray design Microsoft Windows Vista Business 32-bit pre-installed w/CoA Intel Core 2 Duo E7200 2.53 GHz Dual Core processor 3 MB L2 cache, 1066 MHz bus speed Intel Q35 Express chipset