Re: Why is not the northbridge circuitry a part of the cpu?
- From: Joshua Baker-LePain <jlb17@xxxxxxxxxxxxxxxxxxxx>
- Date: Thu, 25 Jan 2007 13:52:12 +0000 (UTC)
On 2007-01-25, sndive@xxxxxxxxx <sndive@xxxxxxxxx> wrote:
Question: why is not northbridge functionality is not a part of the
cpu?
AMD CPUs have the memory controller in the CPU. Intel has yet to go that
route.
At least for CoreDuo. The reason I'm asking is that the son of a gun is
hotter
than cpu anyway. Are there dual socket CoreDuo mobos?
The Xeon 51xx series are essentially dual socket capable Core2 Duos.
I haven't seen any. Dual socket is only a Xeon thing?
I assume having northbridge for dual or a quad machine separate from
cpu would
make sense, but for CoreDuo??? It's not like there is a lot of memory
types to
support these days.
I've benchmarked dual core Opterons vs. Xeon 51xxs, and it's only in
*really* memory intensive codes that the Opterons onboard memory controller
shows up. This in stark contrast to pre-Core Xeons, where the memory
performance was truly hideous.
--
Joshua Baker-LePain
Department of Biomedical Engineering
Duke University
.
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