Karmic Koala <guest@unknown-email.com> wrote:
[color=blue]
>
>I have this question that what is the RAM limit with vista 32-bit and
>64-bit?
>
>I've heard that it is 3,2 GB but I've also heard that it would be 4,0GB
>(because 2^32 = 4.294.967.296. But then 64-bit systems could use over 18
>exabytes of RAM, because 2^64 = 18.446.744.073.709.551.616? Isn't that a
>little too much o.O).[/color]

32-bit Vista has an address space of 4,294,967,296 bytes, as you
calculated. Some of that has to be used for BIOS, Video RAM and a few
other things, so you can actually use only 3.2 - 3.5 GB of RAM. See
[url]http://members.cox.net/slatteryt/RAM.html[/url]

You also calculated the maximum possible address space for a 64-bit
machine. None of Microsoft's 64-bit operating systems implement a fill
64-bit address space. 64-bit Vista Home Basic will handle 8GB, Home
Premium 16GB, and the other versions will take 128GB.

--
Tim Slattery
MS MVP(Shell/User)
[email]Slattery_T@bls.gov[/email]
[url]http://members.cox.net/slatteryt[/url]