Acer R500 manual Memory, System chipsets, Server Works RCC chipset

4 1 System overview

Memory

The four DIMM sockets on board accept using 64-, 72-, 128-, 144-,

512-MB and 1-GB SDRAM (synchronous DRAM) DIMMs for a maximum memory upgrade capacity of up to 4 GB. For data integrity, the default setting of the ECC (error-correcting code) function of the memory system in BIOS is enabled. See “Memory/Cache Options” on page 87 for more on this BIOS setting.

Note: The SDRAM should work under 3.3 volts only; 5-volt memory devices are not supported.

The mainboard supports both 200 and 266 MHz SDRAM DIMMs (PC-1600 and PC-1200).

System chipsets

Server Works RCC chipset

The Server Works RCC chipset was specifically designed to meet the needs of high performance systems. It consists of following components:

•HE-SL-T (north bridge) provides the host interface, memory system control interface and PCI interface.

•CIOB2 (I/O bridge) is a peripheral chip that performs PCI bridging function between the hub interface and the PCI bus. It can provide arbitration support for six PCI devices and manage 2 x 66 Mhz PCI slots.

•CSB5 (south bridge) integrates LPC interface and super I/O functions like keyboard and mouse interface, floppy disk controller, advanced digital data separator, serial port, on-chip 12 mA AT bus drivers, one floppy direct drive support, and Intelligent Power Management (IPM) support.