Xeon™ Processors

Depending on system configuration, each system includes one or two Intel Xeon 1.80GHz or 2.66GHz processors. Each processor plugs into a INT3/FCPGA socket package. The processor includes a 512K cache. When two processors are installed, both processors must be of identical bus and core speed.

The processor external interface operates at a maximum of 400MHz. The second-level cache is located on the substrate of the processor cartridge. The cache includes burst pipelined synchronous static RAM (BSRAM).

System Memory

The system board contains four 168-pin DIMM sockets. Memory is partitioned as two banks of registered SDRAM DIMMs (DDR200 compatible) that must be populated in pairs, each providing 72 bits of buffered two-way interleaved memory (64-bit main memory plus ECC). Your system may include from 256 MB to 4 GB of memory, using up to four DIMMs.

System memory begins at address 0 and is continuous (flat addressing) up to the maximum amount of DRAM installed (exception: system memory is noncontiguous in the ranges defined as memory holes using configuration registers). The system supports both base (conventional) and extended memory.

PCI Riser Slots

The server's expansion capabilities meet the needs of file and application servers for high performance I/O by providing PCI expansion slots.

The system board has four full-length, full height 64-bit/100MHz PCI slots and two 32- bit/33MHz PCI slots.

Video Controller

The system board uses an ATI RAGE XL PCI graphics accelerator with 8 MB of video SDRAM. The embedded SVGA video subsystem supports:

!Resolutions up to 1600 x 1200 under 2D and 1024 x 768 under 3D

!CRT and LCD monitors up to 100 Hz vertical refresh rate.

The system board supports disabling of the onboard video through the BIOS setup menu or when a plug in video card is installed in any of the PCI slots.

SCSI Controller

The system board includes an embedded Adaptec AIC7901W SCSI controller. The AIC7901W provides Ultra-320/160 SCSI functions. As implemented on the system board, the interface attaches to an Ultra-320/160 SCSI backplane that supports up to six Ultra-320/160 SCA drives.

Network Controller

The system board uses a dual-channel Ethernet Controller and supports 10Base- T/100Base-TX/1000Base-T network subsystems.

System Overview 1-13

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NEC 120Lg manual Xeon Processors, System Memory, PCI Riser Slots, Video Controller, Scsi Controller, Network Controller