On Tue, Dec 8, 2009 at 5:27 PM, Rallias UberNerd
<robinstar1574(a)gmail.com> wrote:
On Thu, 19 Nov 2009 17:39:16 -0600, Kevin Kofler
<kevin.kofler(a)chello.at>
wrote:
> Bill McGonigle wrote:
>>
>> "Are you installing Fedora on the computer you're using now?" [YES]
[NO]
>> YES -> is any sort of check even possible if the user is running
>> 32-bit on 64-bit?
>
> Yes, if the CPU has the lm (long mode) flag, it's a 64-bit-capable CPU and
> using the 32-bit version is suboptimal.
>
> Kevin Kofler
>
But wouldn't it be better to use 32 bit when less then 4 GB of ram is
present?
no, using x86_64 means more registers, sse2 as default floating point
instruction set, better calling convention (register passing vs.
stack) or in other words in most cases faster code.