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32bit or 64bit?


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#1 Delta16

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Posted 26 December 2008 - 04:49 PM

When i was on windows xp 32 bit, the windows was reading 3GB of RAM from 4GB. When you are using a 32bit os, even if the os reads 3 gb out of 4 gb, Do you use all the 4 gb or only how many the 32bit system reads?

Then when i used 64bit os, it read all the 4GB of RAM.

Thanks in advanced

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#2 hamluis

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Posted 26 December 2008 - 05:05 PM

TabBlogger The 3GB-not-4GB RAM problem - http://blogs.msdn.com/hiltonl/archive/2007...am-problem.aspx

I have 4GB installed on my other 32-bit system...Start/My Computer/Properties reflects 3.37GB, close enough for me.

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#3 usasma

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Posted 26 December 2008 - 07:25 PM

In the early days motherboards couldn't handle the excess RAM as a system approached 4 gB (mostly DMA errors from what I've seen).
More recently, systems can handle/use the entire 4 gB - but you won't see it all for several different reasons.

I ran 4gB in a 32 bit system, then upgraded to a 64 bit system with the same RAM and didn't notice any increase in performance.
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#4 Delta16

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Posted 27 December 2008 - 04:26 AM

TabBlogger The 3GB-not-4GB RAM problem - http://blogs.msdn.com/hiltonl/archive/2007...am-problem.aspx

I have 4GB installed on my other 32-bit system...Start/My Computer/Properties reflects 3.37GB, close enough for me.

Louis


Thanks for the info. At least the other 1 gb is being used by something, I think ill stay on 32 bit.




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