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Memory Upgrade for Apple Power Mac G4 400 (PCI Video)

Apple Power Mac G4 400 (PCI Video) memory upgrade specification, Power Mac G4 400 (PCI Video) maximum memory, memory speed, and memory upgrade options.

Upgrade memory on Apple Power Mac G4 400 (PCI Video) upto a maximum of 1.0 GB
PC100 SDRAM DIMMs, with maximum 256MB per slot in 4 memory slots. The Apple Power Mac G4 400 (PCI Video) takes the PC100 SDRAM DIMMs Memory Type.

Apple Power Mac G4 400 (PCI Video) Memory Upgrade Specification
Standard Memory Maximum Memory Memory Expansion CPU Type Model/Chipset
64 MB (removable) 1.0 GB
PC100 SDRAM DIMMs
4 sockets Power Mac G4 400MHz 100-MHz system bus
 

Apple Power Mac G4 400 (PCI Video) 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 Apple Power Mac G4 400 (PCI Video) 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.