Axp-List Archive
Re: Benefits of Linux/Alpha over Linux/x86?

Subject: Re: Benefits of Linux/Alpha over Linux/x86?
From: Rich Payne (rdp@talisman.alphalinux.org)
Date: Fri Jun 23 04:03:47 2000


On Fri, 23 Jun 2000, W Bauske wrote:

> Iwao MAKINO wrote:
> >
> >
> > If you use dual CPU, you MUST fill 8 memory slot to get FULL performance.
> > 667/4 is pretty good... 750/8 is even better
> >
>
> Do the math. If you have 4 SDRAM DIMM's, each 8 bytes wide,
> that's a 32 byte wide data stream, also called 256bits. And,
> clocked at 83.33MHZ, you get 2.6GB/sec, on a single bank. That
> is what the board is spec'd at. The UP2K uses the same memory
> architecture as an XP1000, near as I can tell. One can order
> memory for an XP1000 and it runs perfectly fine in a UP2K.

UP2K takes PC100 registered DIMMS, I think XP1000 is the same.
 
> Going to 8 DIMM's won't get you any more performance.

Yeah, I can't see how this would make a difference either, unless you are
increasing the memory size.

--rdp

> (I run both UP2K's and XP1000's)
>
>
> Wes
>
>

-- 
Rich Payne
rpayne@alphalinux.org			www.alphalinux.org

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