dimm memory boards

  Chester Field 19:56 27 Jul 2003
Locked

I am running win XP with two users and needed to upgrade the memory from 64mg to 256mg. I purchased a 256 and placed it into the slot next to the 64 but the computer only showed 192mg. I took the 256 back as faulty and the new one did the same. I then tried 2x 128mg chips together but the computer gave a memory of only 128mg. Also when I put just 1x 128 + 1x 64 it made only 94mg. What can I do to get the full 256mg?

  pj123 23:33 27 Jul 2003

Looks to me like you have onboard shared video of 64mb. which is why your memory shows as 64mb short.

  DieSse 00:28 28 Jul 2003

I suspect you have a system with an older motherboard (440BX/LX type perhaps) - which cannot take newer SDRAM modules that have a different internal organisation to current types.

Earlier motherboards have less RAM addressing lines, which means they cannot access the full capacity of later chips - thus commonly only find half the capacity of the module - which sounds just like you are getting.

The secret is to see if you can find some of the older type modules - sometimes called "double sided" - as they need more chips of lower capacity to make the same final capaity as a modern module.

  DieSse 00:30 28 Jul 2003

"which cannot take newer SDRAM modules that have a different internal organisation to current types." should have read

which cannot take newer SDRAM modules that have a different internal organisation to older types.

sorry.

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