Samsung CPU on a 164LX mainboard

[Jay Estabrook]

On Fri, Dec 08, 2006 at 05:53:44PM +0100, Gero Kuhlmann wrote:
> Hello,
> 
> On Fri, 08 Dec 2006 17:05:27 +0100, Donsbach, Jeff wrote:
> >>> I've recently seen a Samsung 21164P7-500 CPU on eBay. Would it be 
> >>> possible to run this CPU on my 164LX mainboard with the 466 MHz 
> >>> setting? The CPU should be a EV56 according to various web searches.
> >>>
> >>> Thanks in advance. Gero.
> >>>
> >>>   
> >> Should be OK.
> >> Make sure you have a heatsink and a fan with the proper, non-standard
> > wiring too..
> 
> The CPU has been pulled from a PWS 500a according to the seller,
> and it has the original heatsink.

Yes, but those typically do NOT have the fan, which is built into
the enclosure, and not part of the heatsink.

So, you'll need to provide such, in some way...

> > You might also have to change some dip switch settings on the LX
> > motherboard to get the higher clock speed. What those settings should
> > be, I have no idea.
> 
> According to the DEC reference manual the board should be able
> to run the CPU at 433, 533 and 600 MHz. The jumper settings are
> published as well (sorry, I have mistaken the frequency).

PWS were ONLY rated at 433, 500, and 600.

LX164, IIRC, can run at others as well, though those mentioned above
are the standard set. On some platforms, I think LX164 is one of them,
there's a PCI bus frequency dependency on the clockrate frequency of
the CPU, so you may not be able to utilize all the available settings
for the CPU on the LX164.

Be careful out there...

 --Jay++

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Jay A Estabrook                            HPTC - XC I & B
Hewlett-Packard Company - ZKO1-3/D-B.8     (603) 884-0301
110 Spit Brook Road, Nashua NH 03062       Jay.Estabrook at hp.com
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