I find the 64 bit version to be on par with the 32 bit version. I do think 64 bit is faster when using it for GIS with large datasets. I have been using 64 bit for years without remorse. Now, no 64 bit Windows OS has ever been worth using. On Nov 11, 2009 11:19 PM, "Sergey Manucharian" <sergeym@rmico.com> wrote: Excerpts from Smith Dhumbumroong's message of Thursday 12-Nov-09 10:49am:

Better to install both Arch 32-bit and 64-bit on the same machine > (dual boot) and run the tests... I've already did it.

from my personal experience certain operations, such as video/music > encoding, is a _lot_ faster... Well, in my ThinkPad R61 (Core2 Duo CPU T9300 @ 2.50GHz) I got 1.1 times difference (in favour of 64-bit) with couple of videofiles encoded. (By the way, it means that VM performs almost 1.5 worse then the real HW).

Thanks, Sergey