Possible Duplicate:
Why does Windows only show about 3.5GB of my 4GB+ of RAM?

I have a 32-bit system that was previously having 2 GB RAM(DDR2 800 MHZ), i added one more 2 GB RAM(DDR2 800 MHZ), bu it is showing the total ram size in My Computer properties as 3 GB only.

can any body please tell me what might be the problem ?

Thank you

link|improve this question
feedback

migrated from serverfault.com Jun 13 '11 at 7:10

This question came from our site for system administrators and desktop support professionals.

closed as exact duplicate by nhinkle Jun 13 '11 at 7:15

This question covers exactly the same ground as earlier questions on this topic; its answers may be merged with another identical question. See the FAQ for guidance on how to improve it.

1 Answer

32 bit systems can only address 4GB of memory. This upper limit on addressable space is shared by all the devices that need to map memory, RAM, Graphics cards, other hardware adapters... That means that, depending on your hardware configuration, part of your 4 GB RAM cannot be addressed by the system.

link|improve this answer
feedback

Not the answer you're looking for? Browse other questions tagged or ask your own question.