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Re: Debian RAM supporting.

On 2009-04-01 22:57, Tapani Tarvainen wrote:
On Thu, Apr 02, 2009 at 11:32:26AM +0800, Bret Busby (bret@busby.net) wrote:

http://www.acer.com.au/acer/product.do?link=oln23g.redirect&changedAlts=&kcond5e.c2att92=853&CRC=1165838950 , "A 64-bit operating system is required to enjoy the ultimate performance of 4 GB memory"

So, does anyone who has something worth saying, know whether a 64 bit CPU and a 64 bit OS, is required to properly use >= 4GB of RAM?

No, for reasonable definitions of "properly".

But the performance of a 32-bit CPU will suffer from the extension
mechanisms needed to handle memory space bigger than 2^32,
so if you are buying a new machine and plan to have over 4GB
of RAM, a 64-bit CPU and OS would be preferable.

To clarify: a 64-bit CPU with 32-bit userland works perfectly well, especially where there are some proprietary apps that only have 32-bit versions, and you don't want the complexity of a chroot.

Scooty Puff, Sr
The Doom-Bringer

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