PAE does not give any ram increase, why?

[Artem Kuchin]

>> the number do not change with or without PAE
>> 
>> Maybe i look in the wrong place?
>> 
> 
> I'm not going to waste my time explaining for the hundredth time how
> the x86 memory layout works.  If you want to recover the missing
> 256MB, go look in your BIOS for an option about memory hole remapping.

No need, i know this stuff. Problem is that asus p5p800-vm bios does not
have such option (no memory remapping support in chipset)
, so, and simply assumed that  in PAE mode this simply
does not matter and it will give me whole 4GB. Isn't it so?
Is it true for 64bit mode (amd64)?

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Regards,
Artem