> Toshiba Memory > Toshiba Portege Laptop Memory
Memory Upgrade for Toshiba Portege 4000
Toshiba Portege 4000 memory upgrade specification, Portege 4000 maximum memory, memory speed, and memory upgrade options.
Upgrade memory on Toshiba Portege 4000 upto a maximum of 1.0 GB
PC133 SDRAM SODIMMs, with maximum 512MB per slot in 2 memory slots. The Toshiba Portege 4000 takes the PC133 SDRAM SODIMMs Memory Type.
| Toshiba Portege 4000 Memory Upgrade Specification | ||||
|---|---|---|---|---|
| Standard Memory | Maximum Memory | Memory Expansion | CPU Type | Model/Chipset |
| 128 MB (removable) | 1.0 GB PC133 SDRAM SODIMMs |
2 sockets | 750MHz Intel Mobile Pentium III | 100MHz FSB, Trident CyberALADDiN Chipset |
Toshiba Portege 4000 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 Portege 4000 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.
