Nvidia makes a 64 bit video driver for linux.
Lots of people complain that 64-bit linux is not ready. That's pure
FUD, as bad as the misinformation that gets dished out of sidux /
aptosid. I don't want to hear anymore of it.
The real bottleneck is the distribution. If the packagers of the
distribution are responsible and supply the most common and helpful
32-bit libraries to run 32-bit userspace, then running 64-bit linux
with a few 32-bit apps should be transparent. I know there used to be
a few hiccups but lots of folk continue this baseless trend that
64-bit doesn't work based on past experience, none of which is
relevant to today.
So what do you have to gain by switching to 64-bit? That's hard to
answer, so instead I'll answer from the perspective of losing. You
only lose on memory usage, binary size, and any 32-bit software that
are not easily runnable... which are usually the distribution's fault
if they do not have the required 32-bit compatibility packages and
libraries.
I hope that answers your question.
--
Steven Barrett