AMD64 vs i386/x86

[Christopher Chan]

On Thursday, February 18, 2010 05:59 AM, Chris Jones wrote:
>
> On 17 Feb 2010, at 9:44pm, Odd wrote:
>
>> Some time ago, we were discussing which was faster. Some said the bigger
>> foot print of AMD64 instructions makes it slower than x86. This article is
>> interesting:
>>
>> http://www.phoronix.com/scan.php?page=article&item=ubuntu_32_pae&num=1
>
> Interesting indeed, but not surprising to me at least.
>
> Combined with the security benefits of the 64 bit kernel, if anyone still suggests sticking with a 32 bit kernel on a 64 bit capable machine is a good idea, I suggest they are a little bonkers... ;)
>


Security benefits of the 64-bit kernel? What do you get from a 64-bit 
Linux kernel that you do not get on a 32-bit kernel?