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<TITLE>RE: Alpha hardware</TITLE>
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<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">A company that I have used before has listed 128MB 72 pin SIMMs for $40.00. </FONT></SPAN><SPAN LANG="en-us"> </SPAN><A HREF="http://www.pcprogress.com/products.asp?orderid=66373505169440859556197&cat=90"><SPAN LANG="en-us"><U><FONT COLOR="#0000FF" SIZE=2 FACE="Courier New">http://www.pcprogress.com/products.asp?orderid=66373505169440859556197&cat=90</FONT></U></SPAN><SPAN LANG="en-us"></SPAN></A><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Todd</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">-----Original Message-----<BR>
From: axp-list-bounces@redhat.com [<A HREF="mailto:axp-list-bounces@redhat.com">mailto:axp-list-bounces@redhat.com</A>] On Behalf Of Jay Estabrook<BR>
Sent: Friday, December 05, 2008 14:14<BR>
To: Linux on Alpha processors<BR>
Subject: Re: Alpha hardware</FONT></SPAN><SPAN LANG="en-us"></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Yup, that would be one of the SIMM platforms that used 128-bit mem bus.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Earlier ones (Jensen, Noname/UDB, at least, IIRC) had only 64-bit</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">mem bus, and thus required SIMMS in pairs, not quartets... :-)</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">SIMMS == supplied 32-bits wide each</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">DIMMS == supplied 64-bits wide each</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Some later machines took DIMM pairs (DS10), others quartets (XP1000/DS20).</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">Memory bandwidth, of course, is better the wider the mem bus; that's why</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">XP1000 feels faster at 500MHz than DS10 at 667MHz. And DS20/ES40/DS25/ES45</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">have 2 256-bit wide mem buses, when configured/populated correctly.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">IIRC, no DEC Alphas could use single SIMM/DIMM.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">But at least API's UP1100 would work with a single DIMM.</FONT></SPAN></P>
<P DIR=LTR><SPAN LANG="en-us"><FONT SIZE=2 FACE="Courier New">--Jay++</FONT></SPAN></P>
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