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A-2 Dell Dimension 900 System Reference and Troubleshooting Guide
Expansion Bus (continued)
Expansion-card connectors . . . . . . . . . . . . supports two one-third–length
PCI expansion cards
Expansion-card connector size . . . . . . . . . 120 pins
ACPI specification . . . . . . . . . . . . . . . . . . . 1.0a
Expansion-card connector data
width (maximum) . . . . . . . . . . . . . . . . . . . 32 bits
System Clock
System clock . . . . . . . . . . . . . . . . . . . . . . . 66 or 100 MHz (matches external bus
speed)
Memory
Architecture. . . . . . . . . . . . . . . . . . . . . . . . non-ECC SDRAM 168-pin modules
DIMM sockets. . . . . . . . . . . . . . . . . . . . . . two; gold contacts
DIMM capacities. . . . . . . . . . . . . . . . . . . . 32, 64, 128, and 256 MB
Minimum RAM . . . . . . . . . . . . . . . . . . . . . 64 MB
Maximum RAM. . . . . . . . . . . . . . . . . . . . . 512 MB
Frequency . . . . . . . . . . . . . . . . . . . . . . . . . 100 MHz
Clock cycle . . . . . . . . . . . . . . . . . . . . . . . . 10 ns (supports 4 clocks only)
CAS latency. . . . . . . . . . . . . . . . . . . . . . . . three
SPD revision . . . . . . . . . . . . . . . . . . . . . . . 1.2
Buffering . . . . . . . . . . . . . . . . . . . . . . . . . . unbuffered
Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . 3.3 V
Data bus width . . . . . . . . . . . . . . . . . . . . . 64 bits
BIOS address . . . . . . . . . . . . . . . . . . . . . . F0000h
Table A-1. Technical Specifications (continued)
NOTE: The Glossary in the system Help defines abbreviations and acronyms.