Siju George wrote:
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> > so you think a 20 ton truck is twice as fast as a 10 ton truck?
> O.K I get it :-)
> So when does changing from 32 bit to a 64-bit processor actually help?

Quoting Paul de Weerd,
"In short: There is no short answer. It depends on what you're doing."
( Not to mention how you do it ;-)

Short answer:
When you *might* need more than a GB or so of RAM/swap. 
Most anything is faster than stuck.

Easy: 2:1 ratio *either direction* which is faster.
Hard: 10:1 ratio (again either direction).
(figure in loading/unloading times on the truck analogy)