System Overview 1-13
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.