You have probably not inserted the memory module correctly. Remove it and attempt to reinstall it. Try switching the memory module's locations. If the same module fails in both slots, it is likely defective.
Then you should have twice as much RAM. But you still have too little for Windows Vista...
check the memory clock speed. if the 128mb has 100MHz and the 64mb has 133MHz then they will not work together.
1gb128mb
The 128mb memory is larger because RAM is a type of memory and obviously 128 is more than 64.
128mb is pretty low, but if your ibook runs on mac OS 9, then it is not that bad.
You click on the start menu, right click on my computer, and click properties. That should give you the information you need to know.
computer with prossesor speed of 550Mh and 128Mb RAM
it is 128mb
Good in what? 128mb is great in certain equipment, but not enough to even start to run other types of equipement. Try re-posting with more information about what you have the memory in.
Varies can be anywhere from 128mb to 16gb
The memory is to be designed so that 16-bitdata can be accessed in one .Two 64K X 8 SRAM chips have a capacity of 128KB.
i think "Nvidia Geforce FX5700" is best VGA in 128mb memory