Compaq Evo W8000 Hardware Reference Manual page 26

Compaq Evo Workstation W8000 Hardware Reference Guide
Install RIMMs in pairs across both memory channels. Each
RIMM socket populated with a RIMM or CRIMM on Channel A
must be populated with an identical RIMM or CRIMM on
Channel B. Use one of the four configurations listed under
"Configurations for RIMM Installation" in this chapter.
Do not exceed 32 Direct RDRAM devices on each Direct
Rambus memory channel. A label on the RIMM will indicate the
number and speed of Direct RDRAM devices on the RIMM.
The number of Direct RDRAM devices on a RIMM cannot be
changed.
Use 800-MHz RIMMs (or future speeds) only. Your system will
not boot if slower speed RIMMS (i.e. 600 or 712-MHz) are
installed.
Do not mix RIMMs with different memory speeds. Performance
will reflect the slowest speed RIMM.
Use only RIMMs that have been tested and approved by
Compaq. Not all RIMMs meet the Compaq standard for quality
and reliability.
CAUTION: The previous guidelines must be followed when installing
RIMMs, or your workstation will not function.
CAUTION: When handling a memory module, do not touch any of the
contacts. Doing so can damage the module.
Hardware Upgrades
2-11