From owner-freebsd-questions@FreeBSD.ORG  Mon Nov 21 13:36:41 2005
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Date: Mon, 21 Nov 2005 16:36:40 +0300
From: "Andrew P." <infofarmer@gmail.com>
To: mike@ascendency.net
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Cc: freebsd-questions@freebsd.org
Subject: Re: Procedure for upgrading CPU
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On 11/21/05, Mike Loiterman <mike@ascendency.net> wrote:
> I'm thinking of upgrading the CPU in my machine running 6.0-RELEASE with =
an
> SMP kernel.
>
> Is it a matter of powering down the machine, swapping chips and powering =
up?
> Is there anything else I would need to do ahead of time or after the
> upgrade?  Will I need to recompile world, kernel or ports?
>
> I currently have a 2.8 GHz P4 Prescott (520) and I'm thinking of replacin=
g
> it with a 3.6 GHz P4 Prescott (560J).  Both are 32 bit LGA 775 chips.  Th=
e
> motherboard is a SuperMicro P8SGA.
>
> ------------------------------
> Mike Loiterman
> grantADLER
> Tel: 630-302-4944
> Fax: 773-442-0992
> Email: mike@ascendency.net
> PGP Key: 0xD1B9D18E
>
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>

As long as you don't lose any CPU features (e.g.
SSE3 or MMX), which is clearly your case, you're
absolutely safe to just swap the chips.