System Overview 1-357HFKQLFDO6SHFLILFDWLRQVz7DEOH7HFKQLFDO6SHFLILFDWLRQV 0LFURSURFHVVRUMicroprocessor type . . . . . . Intel Pentium II microprocessor with MMXtechnologyMicroprocessor speed . . . . . 266, 333, 350, 400, or 450 MHz (the GX1pis only available in 400 or 450 MHz)External system clock . . . . . 66/100 MHzInternal cache. . . . . . . . . . . . 32-KB (16-KB data cache and 16-KB instruc-tion cache)Math coprocessor . . . . . . . . internal to the microprocessor6\VWHP,QIRUPDWLRQSystem chip set . . . . . . . . . . Intel 440BX AGPSet chip setData bus width. . . . . . . . . . . 64 bitsAddress bus width . . . . . . . . 32 bitsDMA channels . . . . . . . . . . . sevenInterrupt levels . . . . . . . . . . . 15Flash EPROM (BIOS) . . . . . . 2 Mb([SDQVLRQ%XVBus types. . . . . . . . . . . . . . . PCI and ISA (PCI bus complies with PCISpecification 2.1)Bus speeds . . . . . . . . . . . . . PCI: 33 MHz; ISA: 8.33 MHzPCI expansion-cardconnectors:Low-profilecomputers . . . . . . . . . . . . two (one PCI connector and one ISAconnector share an expansion-card slot)Midsize computers . . . . three (one PCI connector and one ISAconnector share an expansion-card slot)orfive (two share expansion-card slots)Mini towercomputers . . . . . . . . . . . . five (two PCI connectors share expansion-card slots with ISA connectors)OptiPlex NX1computers . . . . . . . . . . . one