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Why virtual memory is essential?

Forum Windows XP : Windows XP General Discussion - Why virtual memory is essential?

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Sorry guys,I already posted this letter to Memory but I am not hundred percent satisfied and one guy told me I will get a nice answer from this forum.
Theoratically, if used oiptimally,systems should not use harddisk for memory if the RAM is suffitient.I am telling this by examininig my computer.It got 256 MB RDRAM and I set the virtual memory to 512 MB(Win XP).So the total memory size is 768 MB and it is working perfectly without a memory error yet. So now I can buy a 512 MB more RAM And disable the virtual meory,right?But my fellow members rejected this idea(and I understand their point is true).So where is the limitation for disabling virtual memory lies?Is it a limitation of windows?I need a good explanation.Please help me.

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my $0.02 is:

1) Certain games need virtual, it's hard coded.

2) You are correct, VM is not needed from an OS perspective as long as you have enough RAM.

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jlanka (. .)
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Reply to jlanka

Have you taken a look at this recent <A HREF="http://forumz.tomshardware.com/software/modules.php?name=Forums&file=viewtopic&p=36359#36359" target="_new">thread</A>? I'd rather not have to type all that out again! :lol:

Toey

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Reply to Toejam31

U did a sensible thing.Thank u

Reply to varghesejim

256MB RAM is not enough for windows XP, in fact, you may have to set the virtual as 2 times as your physical memory, better located in different hardisk.

No matter how much you know today, you will have to know more tomorrow.

I feel sorry for my bad English and I am in Hong Kong.

Reply to aryiu

Thanks. But,this answer is not one for my question.I asked a completely different question.If u have time try to understand my question.

Reply to varghesejim
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