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10.6: How to boot into the 64-bit kernel
Authored by: thyvillageidiot on Sep 15, '09 10:16:48AM

Any advantage for the average user (in iTunes, iMovie, Safari, etc.?)?



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10.6: How to boot into the 64-bit kernel
Authored by: tim1724 on Sep 15, '09 02:51:26PM

No advantage at all, at least not yet.

The only cases where a 64-bit kernel makes much of a difference is if you have lots of RAM (and by lots I mean 20 GB, not 4 GB) or if you have device drivers which need to map a ton of address space (very rare now, but will be more common in a few years)

In 3 years or so you'll want to have a 64-bit kernel, but it's not necessary right now. And there is one big downside right now: most third-party kernel extensions (including many device drivers) are only available for the 32-bit kernel.

---
Tim Buchheim



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10.6: How to boot into the 64-bit kernel
Authored by: frgough on Sep 16, '09 07:17:12AM

Not entirely true.

Because of the Intel architecture, 64-bit programs (including the kernel) gain access to more registers, which translates into a speed increase.



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