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IBM PC Server 720 (8642-xDx) Memory RAM Upgrades

IBM PC Server 720 (8642-xDx) RAM Memory Specification

Choose the following RAM Memory Upgrade for IBM PC Server 720 (8642-xDx). 

How much memory can I upgrade my IBM PC Server 720 (8642-xDx) to and what is memory type it takes?

You can upgrade your IBM PC Server 720 (8642-xDx) upto a maximum of 512 MB / 1 GB with the 94G2942 memory card, with maximum of per slot in 16 (2 banks of 8) / 16 (2 banks of 8) on the 94G2942 memory card memory slots. The IBM PC Server 720 (8642-xDx) takes the MODULES MUST BE ORDERED AND INSTALLED IN GROUPS OF EIGHT. The 8MB modules CANNOT be mixed with the 16MB or 32MB modules on the same card. However 16MB or 32MB modules CAN coexist on the same memory card. Memory Type.

What are memory sockets or slots and how are these divided into bank?

Memory Sockets or Slots are the place where memory RAM modules are inserted in the motherboard. The IBM PC Server 720 (8642-xDx) has 16 (2 banks of 8) / 16 (2 banks of 8) on the 94G2942 memory card memory expansion slots. A memory bank is a group of memory expansion sockets, a bank must be completely filled with memory modules of the same size and type in order for the system to recognize and address the memory. i.e. :


2 sockets (2 banks of 1) This indicates that there are 2 memory slots. These are divided into 2 banks, and each bank consists of one memory slot. So you can add memory one piece at a time for the system to use.

3 sockets (3 banks of 1) This indicates that there are 3 memory slots. These are divided into 3 banks, and each bank consists of one memory slot. So you can add memory one piece at a time for the system to use.

4 sockets (2 banks of 2) This indicates that there are 4 memory slots. These are divided into 2 banks, and each bank consists of two memory slots. So you must add memory two pieces at a time (they must be the same size and type of memory) in order for the system to benefit from the upgrade.

8 sockets (4 banks of 2) This indicates that there are 8 memory slots. These are divided into 4 banks, and each bank consists of two memory slots. So you must add memory two pieces at a time (they must be the same size and type of memory) in order for the system to benefit from the upgrade.

12 sockets (3 banks of 4) This indicates that there are 12 memory slots. These are divided into 3 banks, and each bank consists of four memory slots. So you must add memory four pieces at a time (and they must be the same size and type of memory) in order for the system to benefit from the upgrade.

How do I install memory on my IBM PC Server 720 (8642-xDx)?

Memory installation help guides can be found at the following link.
Memory Installation Guide
184-pin DDR DIMM Installation Guide
168-pin SDRAM DIMM Installation Guide

I still need some help on choosing my IBM PC Server 720 (8642-xDx) memory upgrade, what do I do?

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