2-18 General Description

System Board Features

The following subsections describe the system board major components.

Processor

The processor board accommodates one to four Intel Xeon processor MP with 512k/1MB cache in the FC-PGA2 package.

DIMM Memory

The memory board contains twelve 168-pin DIMM slots each supporting 72-bit ECC (64-bit main memory plus ECC) registered PC-200 Double Data Rate (DDR) DIMMs. Memory is partitioned in three banks. You may install a minimum of 512 MB (128 MB × 4) or as much as 12 GB.

The controller automatically detects, sizes, and initializes the memory array, depending on the type, size, and speed of the installed DIMMs, and reports memory size and allocation to the server via configuration registers.

NOTE: Use DIMMs that have been provided by NEC. Contact your service representative or dealer for a current list of approved memory modules.

Onboard Video

The baseboard incorporates an ATI RAGE XL PCI graphics accelerator with 4 MB of video SDRAM that supports all standard IBM VGA modes. The embedded SVGA video subsystem supports:

„Pixel resolutions up to 1024 × 768

„CRT and LCD monitors up to 100 Hz vertical refresh rate

The baseboard supports disabling of the onboard video through BIOS Setup or when a plug-in video card is installed in any of the PCI slots.

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NEC 140Rc-4 manual System Board Features, Processor, Dimm Memory, Onboard Video