Linux: PAE or x64

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Hello,

I'll use PG on a dedicated machine with more than 4GB of memory.

The problem is: what would be better to use: PAE ("bigmem" kernels) or
64-bit kernel?

PAE pro: half the memory per pointer, int, etc.

PAE risk: is PG able to take advantage of all the memory on PAE, esp. re
things like shared buffers?

64-bit pro: it's more mainstream now, no worries about shared bufs etc.

PAE overhead according to wikipedia should be small. (?)

So, which one should be better?

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Regards,
mk

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Premature optimization is the root of all fun.
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