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Date:      Tue, 5 Dec 2000 21:12:09 -0800 (PST)
From:      Jin Guojun (DSD staff) <jin@george.lbl.gov>
To:        msmith@freebsd.org
Cc:        hardware@freebsd.org
Subject:   Re: high bandwidth I/O motherboard (any recommendation?)
Message-ID:  <200012060512.eB65C9m24117@portnoy.lbl.gov>

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} >       Intel 810/815e + 82801AA/82801BA 
} >       VIA VT82C694X + VT82C686A/VT82C686B
} > 
} > Any comments/suggestion on which motherboard can give 120MBps I/O bandwidth?
} 
} You will get best results with the Intel 440BX, especially overclocked 
} and with faster SDRAM (the real issue is memory bandwidth).

The memory bandwidth is the problem. But the BX only supports PC-100.
Drop PC-133 into the system will not help much, except that the overclocking
will not worry about memory bomb.

The really problem for the current PCI chipset is that its memory controller
cannot give us full memory bandwidth. If we can have full memory bandwidth
that matches memory chip, then we can get full PCI I/O bandwidth.

} If I recall, you're also very much concerned with cost; otherwise I'd be 
} recommending the ServerWorks chipsets.

Yup, I have ServerWorks chipsets and know what they can do; but the cost
drag me away from it.

VIA is building PRO-266 chip that will support 266MHz FBS. VIA claims
that this chip bits RIMM, and also claims it will support Intel SMP and
AMD 760 MP. Schduled for January, 2001.

	-Jin


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