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Laptop Memory Finder   >   IBM   >   ThinkPad T Series   >   T21 (Type 2548)
Memory Finder System Information and Available Memory Modules.
IBM Memory
IBM ThinkPad T T21 (Type 2548)
Alailable Memory Modules
 
Memory Speed Module Size Part Number Our Price Guaranteed To Work
PC100
100 Mhz
128MB M-100N-128BD03 $20.96
Quantity:
PC100
100 Mhz
256MB M-100N-256BD04 $55.96
Quantity:
 

Memory Upgrade Tips
 
  • Your IBM ThinkPad T T21 (Type 2548) only supports memory modules made with a specific type of chip. Should you find what seems to be the exact same memory modules elsewhere for a lower price, it is very possible that the cheaper memory modules will not work in your system. By using Memory-Up's Memory Finder, your selected memory modules are Guaranteed To Work or your money back.<Learn More>

  • Determine which type of user you are and how much memory do you currently have first before buying the new memory modules.<Learn More>

  • Different sizes/speeds of memory module can be used together as long as the specifications meet the system requirements. <Learn More>
 

Model/System Informaion
  IBM ThinkPad T T21 (Type 2548) Specification
Memory Type: SDRAM SODIMM 144pin
SDRAM SODIMM:
SDRAM, synchronous dynamic random access memory delivers bursts of data at high speeds using a synchronous interface. Its is actually SDR SDRAM (single data rate SDRAM) but is usually used to referred to as just "SDRAM."
SODIMM, small outline dual inline memory module. Smaller and thinner than standard DIMMs, SODIMMs are typically used in laptop computers.
Memory Speed: PC100
Chipset: Intel 440BX  
Chipset :
A group of chips that together make up a complete computer processing unit, usually on one circuit board (the motherboard). It may include the main central processor, graphics processors, secondary cache memory, and input-output controllers. Memory is one component controlled by the chipset.
Standard Memory: 128MB  Removable
Memory Slot(s): 2
Max. Memory Per System: 512MB
Max. Memory Per Slot: 256MB
Dual Channel Memory Support: Not Support  
Dual Channel :
A development in motherboard and chipset design that allows for increased bandwidth transfer when using two or more memory modules in separate transfer channels. These separate channels allow each module access to the memory controller, increasing throughput bandwidth. It is a good idea to use matched pairs of modules to ensure the best compatibility for dual channel operation.
Install Memory in Pairs: Not Required  
Install in Pairs :
Memory modules must be installed in pairs of matched memory size. This means that if you purchased your computer with 128 MB of memory installed and you want to add another 512 MB of memory, you must remove the two continuity modules and replace them with two 256-MB memory modules.
 
 
Model/System Show Case
  IBM ThinkPad T T21 (Type 2548)  

Important Notes for Your Model/System
  IBM ThinkPad T T21 (Type 2548) technical notes coming soon!  
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