Newbie Sempron/ISO question

Stanislav Sedov stas at
Fri Feb 2 09:06:47 UTC 2007

On Thu, 1 Feb 2007 21:16:12 -0800 (PST)
Thomas Roberts <freebsd_tester at> mentioned:

> I need help deciding which ISO to install on my
> machine, which is a Compaq Presario SR1620NX.  The
> FreeBSD/amd64 Project web page says the Sempron uses
> the AMD64 architecture so I installed the amd64
> 6.2-RELEASE ISO.  Since I want to stay with STABLE I
> started reading on how to do it and am now confused as
> to what I should do.The /var/log/ file
> says:
> CPU: AMD Sempron(tm) Processor 3400+ (1989.82-MHz
> k8-class CPU)
> Origin="AuthenticAMD" Id=0x20ff2 Stepping=2
> While searching through a poster said
> the k8-class CPU is an Athlon64 locked in 32-bit mode
> and if anyone has this CPU they should be using the
> i386 ISO.
> Whether I use the i386 or amd64 ISO I will be putting
> the CPUTYPE?=k8 in my make.conf file so my question is
> "Since I am specifying the CPUTYPE should I stay with
> amd64 or start over with i386?"  I am not worried
> about not having 64-bit capabilities, but I am worried
> that using the i386 ISO will not use the CPU to its fulest.

Since you have successfully installed 6.2/amd64 this is
essentially an AMD64-enabled machine. So don't worry and use amd64
edition and use k8 as CPU type.

Stanislav Sedov
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