Clarification about AMD64 port for Core Duo

Dan Nelson dnelson at
Thu Jan 12 17:01:54 UTC 2012

In the last episode (Jan 12), Frank Lay said:
> The CURRENT (9.0R) release notes have the following to say about the AMD64
> port:
> -------------------------->8-------------------------------------
> As of this writing, the following processors are supported:
> ...
> * All Intel Core 2 (not Core Duo) and later processors
> ...
> -------------------------->8-------------------------------------
> Yet I see many people on the Internet claiming that they're running
> FreeBSD version <= 9.0 successfully with Core Duos.  What's the meaning of
> this?  I own a C2D E8400 (Wolfdale) processor, would I perhaps be safer
> chosing the i386 port?  Or is this all hyperbole?

Core Duo processors don't have support for the 64-bit instruction set,
that's all, so they have to use the i386 distribution.  To verify, go to , hit the "Select All" button,
and then "Compare now".

	Dan Nelson
	dnelson at

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