Date: Mon, 1 Jan 2007 12:38:45 +1100 From: Peter Jeremy <peterjeremy@optushome.com.au> To: jonathan michaels <jlm@caamora.com.au> Cc: freebsd-hardware@freebsd.org Subject: Re: some advice please --- amd semperon v opteron for dns/mail/nfs freebsd server Message-ID: <20070101013845.GK45526@turion.vk2pj.dyndns.org> In-Reply-To: <20061231105852.59380@caamora.com.au> References: <20061231105852.59380@caamora.com.au>
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--3xoW37o/FfUZJwQG Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Greetings and Happy New year to all. On Sun, 2006-Dec-31 10:58:52 +1100, jonathan michaels wrote: >anyway, i'm looking to replace both/one of teh dec alphas with a more >curently supported architecture thats likely to offer simialr >performance and clean architecture, sorry that my world view. CPU-performance-wise, almost anything you can buy today will run rings around an AS2000/500. Architecture-wide, I haven't seen anything that comes close to the Alpha. The AMD64 architecture is "clean" only in comparison with one of the worst computer architectures ever to see the light of day. >my only difficulty is that i do not understand what are the differences >between the two amd offerings, that is between teh opteron and teh >semperon .. Basically, the Sempron is the low-end "desktop" processor and the Opteron is the high-end "server" processor (similar to the Intel Celeron vs Xeon naming). Note that not all Sempron's support amd64 mode - according to the AMD website, all _current_ Sempron processors support amd64 but I know early ones didn't and I'm uncertain how to distinguish them without examining the "AMD Features" part of CPUID. >what sort of motherboards would work best with freebsd, Have a look at http://www.freebsd.org/platforms/amd64/motherboards.html You might also like to ask on freebsd-amd64 > what if any >gotchas are thier with the semperon and or teh opteron and which would >be the best to use in a medium workload, In terms of meeting your performance requirements, I'd say the CPU is fairly irrelevant . In terms of reliability, a good Opteron-based server with ECC RAM and SCSI (or good SATA) disks is going to be far more reliable than a whitebox cobbled together around a cheap Sempron motherboard. (Of course, it'll also have an extra digit in the price tag). --=20 Peter Jeremy --3xoW37o/FfUZJwQG Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (FreeBSD) iD8DBQFFmGYl/opHv/APuIcRAs21AKCrrXXCWhfSbK/tK8hB0ZNKDrjMmgCfU2xi 2U44lwX3+zqhtg3qcRjW1is= =YD31 -----END PGP SIGNATURE----- --3xoW37o/FfUZJwQG--
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