CAUTION! Memory is static sensitive. Do not handle loose memory modules without grounding yourself or using an anti-static strap. Failure to do so can result in damage to the modules, and result in premature failure or intermittent problems. Most systems have power saving features and should have the power cable disconnected before installing or removing memory, CPUs, or adapter cards.

Description:
The Intel VC820 motherboard uses RAMBUS RIMM™ memory modules. Memory can be installed one RIMM module at a time.

NOTE: There can be no empty RIMM connectors. RIMM connectors without a RIMM installed must be populated with Continuity RIMMs. The Continuity RIMMs are used to provide signal paths for the memory modules.

VC820 and VC820-2 System Board Layout
There are a total of two memory slots on the VC820 system board. Continuity RIMM modules must be installed in any empty slots. Your system will not boot up if any slot is left empty. If additional memory is added, all RIMM modules must be of the same speed.

RIMM Description
Memory RIMMs have a heat spreader over the chips, while Continuity RIMMs (C-RIMMs) have no chips at all. C-RIMM modules complete the channel connections for the installed memory.

Installation
The Intel VC820 desktop board has two memory module sockets identified as banks 0 and 1. The socket closest to the processor is bank 0. When adding memory, be aware that:

• If only one memory module is being installed, you can install it in any memory module socket
  
• You can use different densities of memory modules in different banks. The VC820 system board supports modules of 64, 96, 128, and 256MB
  
• Memory bus frequency can be 300 MHz, 356 MHz, or 400 MHz. Do not mix RIMMs of different speed
  
• The BIOS detects the size and type of installed memory
  
• Maximum memory is 512MB

To install memory modules, follow these steps:

1. Holding the memory module by the edges, remove it from its anti-static package.
2. Make sure the clips at either end of the socket are pushed away from the socket.
3. Position the module above the socket. Align the two small notches in the bottom edge of the module with the keys in the socket.
4. Insert the bottom edge of the module into the socket.
5. When the module is seated, push down on the top edge of the module until the retaining clips snap into place. Make sure the clips are firmly in place.

Configurations
Some typical configurations are listed below. All modules must be either PC-100 or PC133, 3.3v., NON-ECC SDRAM DIMMs: