HP Deskpro ap250 Compaq Deskpro Workstation AP250 Hardware Reference Guide - Page 20

Installing Additional Memory, Guidelines for RIMM Installation

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Installing Additional Memory The Compaq Deskpro Workstation AP250 workstation supports Error Checking and Correcting (ECC) Direct Rambus inline memory modules (RIMMs). Additional RIMMs are available to upgrade the memory. A maximum of 32 count Direct RDRAM devices is supported on each Direct Rambus memory channel. Continuity RIMMs (CRIMMs) must populate any empty slots. Guidelines for RIMM Installation When installing RIMMs, you must follow the guidelines listed below: s A RIMM can be installed only one way. Be sure to match the two key slots on the RIMM with the tabs on the RIMM socket. Push the RIMM down into the RIMM socket, ensuring that it is fully inserted and properly seated, and that the retaining arms are locked in place. s .or optimal performance, install RIMMs in Slot 1, then Slot 2, and so on. s CRIMMs must be installed in all empty RIMM sockets. The CRIMMs are removed when you populate the sockets with RIMMs. s Never populate Slot 1 with a CRIMM. The correct configurations are: ❏ Slot 1 (RIMM) and Slot 2 (CRIMM), or ❏ Slot 1 (RIMM) and Slot 2 (RIMM) s Do not exceed 32-count Direct RDRAM devices on each Direct Rambus memory channel. A label on the RIMM will indicate the number of Direct RDRAM devices on the RIMM and their speed. ✎ You cannot remove or add Direct RDRAMS to a RIMM because the Direct RDRAMS are soldered on and encased by another material. s Do not mix RIMMs with different memory speeds. Performance will reflect the slowest speed RIMMs. Compaq Deskpro Workstation AP250 Hardware Reference Guide 2-5

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Compaq Deskpro Workstation AP250 Hardware Reference Guide
2-5
Compaq Confidential - Need to Know Required
Installing Additional Memory
The Compaq Deskpro Workstation AP250 workstation supports Error
Checking and Correcting (ECC) Direct Rambus inline memory
modules (RIMMs). Additional RIMMs are available to upgrade the
memory. A maximum of 32 count Direct RDRAM devices is supported
on each Direct Rambus memory channel. Continuity RIMMs
(CRIMMs) must populate any empty slots.
Guidelines for RIMM Installation
When installing RIMMs, you must follow the guidelines listed below:
■
A RIMM can be installed only one way. Be sure to match the two
key slots on the RIMM with the tabs on the RIMM socket. Push
the RIMM down into the RIMM socket, ensuring that it is fully
inserted and properly seated, and that the retaining arms are locked
in place.
■
±or optimal performance, install RIMMs in Slot 1, then Slot 2, and
so on.
■
CRIMMs must be installed in all empty RIMM sockets. The
CRIMMs are removed when you populate the sockets with
RIMMs.
■
Never populate Slot 1 with a CRIMM. The correct configurations
are:
Slot 1 (RIMM) and Slot 2 (CRIMM), or
Slot 1 (RIMM) and Slot 2 (RIMM)
■
Do not exceed 32-count Direct RDRAM devices on each Direct
Rambus memory channel. A label on the RIMM will indicate the
number of Direct RDRAM devices on the RIMM and their speed.
You cannot remove or add Direct RDRAMS to a RIMM
because the Direct RDRAMS are soldered on and encased by
another material.
■
Do not mix RIMMs with different memory speeds. Performance
will reflect the slowest speed RIMMs.