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Discussion Starter #1
Hi
I am looking forward to using a 64 bit OS like Windows XP 64 bit
i was wondering wat is the max memory that i can use
i am a avid gamer so i believe that more the memory better n smoother my system work
thats the whole reason for me to go for a 64 bit OS as the normal os supports only 4 Gb

Eagerly waiting for reply
Any Info ll be helpful
Regards
 

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Hello and welcome.

A 32 bit OS reconises 3.25 gig RAM a 64 bit OS reconises 4 gig and over.

You must remember adding more RAM your mainboard must support more RAM.

If your mainboard supports the added amount of RAM you could add 4 gig upto 8 gig I suppose.
 

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64 Bit XP drivers are very limited and often not stable.
If you want to go 64 Bit, go with Vista or, better choice, wait for Windows 7 in Oct.
4GB of RAM is more than sufficient.
 

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Here's the theory behind it:
For 32-bit, the most RAM that can be addressed is 2^32 (in bytes)
2 ^ 32 = 4,294,967,296 Bytes
Divide by 1024,
4,294,967,296 Bytes / 1024 = 4,194,304 KB
4,194,304 KB / 1024 = 4,096 MB
4,096 MB / 1024 = 4GB

For 64-bit, the most RAM that can be addressed is 2^64 Bytes
2 ^ 64 = 1.844 * 10^19 Bytes
1.844 * 10^19 Bytes / 1024 = 1.801 * 10^16 KB
1.796 * 10^16 KB / 1024 = 1.759 * 10^13 MB
1.748 * 10^13 MB / 1024 = 1.717 * 10^10 GB
1.702 * 10^10 GB / 1024 = 16,777,216 TB
16,777,216 TB / 1024 = 16,384 PB (Petabytes)
16,384 PB / 1024 = 16 EB (Exabytes)

Obviously, there's no motherboard that can handle that much RAM, but perhaps sometime in the distant future, everyone will have 16EB of RAM.
 
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