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Memory Upgrade for Sony VAIO PCG-SR21K
Sony VAIO PCG-SR21K memory upgrade specification, VAIO PCG-SR21K maximum memory, memory speed, and memory upgrade options.
Upgrade memory on Sony VAIO PCG-SR21K upto a maximum of 256 MB
PC100 SDRAM MicroDIMM, with maximum 128MB per slot in 2 memory slots. The Sony VAIO PCG-SR21K takes the PC100 SDRAM MicroDIMM Memory Type.
| Sony VAIO PCG-SR21K Memory Upgrade Specification | ||||
|---|---|---|---|---|
| Standard Memory | Maximum Memory | Memory Expansion | CPU Type | Model/Chipset |
| 128 MB = 64 MB (removable) + 64 MB (removable) or 192 MB = 128 MB (removable) + 64 MB (removable) | 256 MB PC100 SDRAM MicroDIMM |
2 sockets | 650MHz Intel Pentium III | 100MHz FSB |
Sony VAIO PCG-SR21K 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 Sony VAIO PCG-SR21K has 2 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.
