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Date: Fri, 23 Mar 2007 22:28:31 -0700
From: Garrett Cooper <youshi10@u.washington.edu>
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Subject: Re: optimization for Athlon 64 X2
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Daniel Dvořák wrote:
> Hi all,
> 
> out of curiosity, which CPUTYPE setting is appropriate for dual Manchester core Athlon 64 X2 3800+ processor with FreeBSD 6.2 (GCC 3.4.4) ?
> 
> Googling throws up nothing useful.
> 
> Dan

Try the -march value listed here (athlon64): 
<http://gentoo-wiki.com/Safe_Cflags#Athlon_64_X2_.28AMD.29>.

-Garrett