[Virtualacorn-list] VRPC on Vista Home Premium being upgraded to Windows 7

[Jan-Jaap van der Geer]

On Thu, 2010-02-04 at 11:45 +0200, Michael Ben-Gershon wrote:
> Upgrading from XP (32 bit) to 7 (64 bit) gave a vast performance 
> increase. I would put some of it down to Windows 7 being a far more 
> sophisticated OS than XP, but also to the 64 bit hardware being used to 
> the full (especially being able to utilise more than 3.5G of memory.

Apart from the obvious advantage of being able to address more memory,
there might not actually be that much advantage in 64bits. It may even
be slower.

>From http://en.wikipedia.org/wiki/64-bit :

"The main disadvantage of 64-bit architectures is that relative to
32-bit architectures, the same data occupies more space in memory (due
to swollen pointers and possibly other types and alignment padding).
This increases the memory requirements of a given process and can have
implications for efficient processor cache utilization."

Cheers,
Jan-Jaap