Acer Aspire AX3400-U3032 Athlon II X4 640 3.0GHz 4GB 1TB DVD&plusmn;RW DL Windows 7 Home Premium Small Form Factor Acer Aspire AX3400-U3032 Athlon II X4 640 3.0 GHz Small Form Factor Desktop PC General Features: Small form factor design Microsoft Windows 7 Home Premium 64-bit pre-installed w/CoA AMD Athlon II X4 640 3.0GHz Quad-Core Processor 4 GB DDR2 RAM 1 TB SATA hard drive DVD RW DL drive Integrated video Dolby Home Theater Integrated high definition audio with 5.1-channel audio support