Dell OptiPlex 740 Athlon 64 X2 3800+ 2.0GHz 1GB 80GB CDRW/DVD XP Professional Mini-Tower Dell OptiPlex 740 Athlon 64 X2 3800+ 2.0 GHz Mini Tower PC General Features: Microsoft Windows XP Professional pre-installed w/CoA AMD Athlon 64 X2 3800+ 2.0 GHz Socket AM2 Dual-Core processor Supports HyperTransport, 2 x 512 KB L2 cache 1 GB DDR2 memory (supports up to 8 GB Non-ECC DDR2 SDRAM)