System Overview 1-7Pentium II ProcessorThe system board includes a Pentium II processor packaged in a Single Edge Contact (S.E.C.)cartridge. The cartridge includes the processor core with an integrated 16 KB primary (L1) cache;the secondary (L2) cache; a thermal plate; and a back cover. The processor implements the MMX™technology and the processor’s numeric coprocessor significantly increases the speed of floating-point operations.The processor external interface operates at 100 MHz. The second-level cache is located on thesubstrate of the S.E.C. cartridge. The cache includes burst pipelined synchronous static RAM(BSRAM). The L2 cache is offered in 512 KB configurations only, with error correcting code (ECC)that operates at half the core clock rate.System MemoryThe system board contains three 168-pin DIMM sockets. Memory is partitioned as three banks ofSDRAM DIMMs, each providing 72 bits of noninterleaved memory (64-bit main memory plusECC). Your system may include from 32 MB to 768 MB of memory, using up to four DIMMs.System memory begins at address 0 and is continuous (flat addressing) up to the maximumamount of DRAM installed (exception: system memory is noncontiguous in the ranges defined asmemory holes using configuration registers). The system supports both base (conventional) andextended memory.I/O Expansion SlotsThe server's expansion capabilities meet the needs of file and application servers for highperformance I/O by providing a combination of PCI local bus and ISA connectors.The system board has two full-length ISA bus connectors. One of the connectors shares a chassisexpansion slot with a PCI connector. ISA features:n Bus speed up to 8.33 MHzn 16-bit memory addressingn 8- or 16-bit data transfersn Plug and Play ready.
