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Memory Upgrade for IBM Netfinity 5500 8660-4xx

IBM Netfinity 5500 8660-4xx memory upgrade specification, Netfinity 5500 8660-4xx maximum memory, memory speed, and memory upgrade options.

Upgrade memory on IBM Netfinity 5500 8660-4xx upto a maximum of 1.0 GB
DIMMs must be installed in order, J1, J2, J3, J4 with the capacities going from largest to smallest. The 256MB Registered DIMM option cannot be mixed with the PC100 options. In addition, the jumper J12 must be changed from Pins 1,2 to Pins 2,3., with maximum 256MB per slot in 4 memory slots. The IBM Netfinity 5500 8660-4xx takes the DIMMs must be installed in order, J1, J2, J3, J4 with the capacities going from largest to smallest. The 256MB Registered DIMM option cannot be mixed with the PC100 options. In addition, the jumper J12 must be changed from Pins 1,2 to Pins 2,3. Memory Type.

IBM Netfinity 5500 8660-4xx Memory Upgrade Specification
Standard Memory Maximum Memory Memory Expansion CPU Type Model/Chipset
128 or 256MB (removable) 1.0 GB
DIMMs must be installed in order, J1, J2, J3, J4 with the capacities going from largest to smallest. The 256MB Registered DIMM option cannot be mixed with the PC100 options. In addition, the jumper J12 must be changed from Pins 1,2 to Pins 2,3.
4 sockets 400MHz Intel Pentium II High availability, 2-way PentiumŪ II processor server High availability, 2-way PentiumŪ III processor server
 

IBM Netfinity 5500 8660-4xx Memory Upgrade options.

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 Netfinity 5500 8660-4xx has 4 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.