NEC SP B-Series System Board, Processor, System Cache/Memory, Audio Connectors Minitower Models

Audio Connectors – Minitower Models

A – Line Out Jack	B – Line In Jack
C – Microphone Jack	D –MIDI/Game Port

System Board

The system board contains most of the components that provide system functions. The following subsections provide a description of these components.

Processor

The system board uses a 350-MHz, 400-MHz, or 450-MHz Intel Pentium II processor or a 500-MHz Intel Pentium III processor. All use MMX technology. The MMX processor improves audio, video, and 3D graphics performance.

Each processor is packaged in a Single Edge Contact (SEC) cartridge that plugs into the system board’s slot 1.

System Cache/Memory

To use the processor’s power, the system features an optimized 64-bit memory interface and provides support for a second level cache to complement the processor’s internal cache.

High-performance features include:

pipeline 32-bit addressing

T64-bit data

512-KB of pipeline burst secondary cache; direct mapped write-back and write-through organization.

The system comes with 32 to 384 MB of main system memory. Three sockets on the system board support up to 384 MB of high-speed memory using industry-standard gold-plated dual in-line memory modules (DIMMs).

The system supports PC100-MHz Synchronous DRAM (SDRAM) only.

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