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Memory Upgrade for Toshiba Satellite M640-ST2N02
Toshiba Satellite M640-ST2N02 memory upgrade specification, Satellite M640-ST2N02 maximum memory, memory speed, and memory upgrade options.
Upgrade memory on Toshiba Satellite M640-ST2N02 upto a maximum of 4GB
PC3-8500 DDR3-1066 204pin SDRAM SODIMM, with maximum 2GB per slot in 2 (2 banks of 1) memory slots. The Toshiba Satellite M640-ST2N02 takes the PC3-8500 DDR3-1066 204pin SDRAM SODIMM Memory Type.
| Toshiba Satellite M640-ST2N02 Memory Upgrade Specification | ||||
|---|---|---|---|---|
| Standard Memory | Maximum Memory | Memory Expansion | CPU Type | Model/Chipset |
| 1GB | 4GB PC3-8500 DDR3-1066 204pin SDRAM SODIMM |
2 (2 banks of 1) | Intel Core i5-460M Processor Intel Mobile Express HM55 Chipset |
|
Toshiba Satellite M640-ST2N02 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 Toshiba Satellite M640-ST2N02 has 2 (2 banks of 1) 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.
