Re: Building new Athlon AMD64 Socket 939 or 940 machine
From: Martin Cracauer (cracauer_at_cons.org)
Date: 11/28/05
- Previous message: Søren Schmidt: "Re: Building new Athlon AMD64 Socket 939 or 940 machine"
- In reply to: Nate Eldredge: "Re: Building new Athlon AMD64 Socket 939 or 940 machine"
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Date: Mon, 28 Nov 2005 10:35:20 -0500 To: Nate Eldredge <nge@cs.hmc.edu>
> I put together a machine a couple months ago. I used a Tyan S2875ANRF
> ("Tiger K8W") dual-Opteron motherboard and a single Opteron 244 (1.8 GHz)
> cpu (second one may come in the future). I am running 5.4 and have been
> very happy with it.
Note that the Tiger K8W (PCI) does not support dual-core CPUs, where
the newest revisions(!) of the Thunder K8W (PCI-X) do. The Thunder is
an oversize ATX board, though, and expensive.
> I decided it was worth going for Opteron over Athlon 64. They seem to
> have better performance (wider memory bus, etc), obviously SMP ability,
Sorry, the memory bus is not wider than on socket 939. You do have
additional Hyperlinks in the socket 940 CPUs (real-life performance
effect unknown to me) and the better boards have seperate memory banks
for the CPUs.
> and as I understand it the regular Athlon 64s don't support ECC memory
> which I insist upon.
All AMD64 CPUs support ECC. But only socket 940 requires registered
memory.
ECC support in socket 754 and 939 is a function of board, but all or
almost all Asus boards support it (unregistered ECC of course).
> The Athlon 64FX appear to be similar to the fastest
> Opterons and differ mainly for price marketing purposes (sold to gamers).
The one feature of the FX CPUs is that the LDT->CPU frequency
multiplier is unlocked, which allows for freer combining of frequency
settings when overclocking. Plus they have high base clocks and many
seem to be binned to overclock well.
Martin
-- %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% Martin Cracauer <cracauer@cons.org> http://www.cons.org/cracauer/ FreeBSD - where you want to go, today. http://www.freebsd.org/ _______________________________________________ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"
- Previous message: Søren Schmidt: "Re: Building new Athlon AMD64 Socket 939 or 940 machine"
- In reply to: Nate Eldredge: "Re: Building new Athlon AMD64 Socket 939 or 940 machine"
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