[NTLUG:Discuss] motherboard and memory question

[Fred James]

I traced this one down to the chip maker (Micron P/N: MT48LC16M16A 75 C 
TG) as a 32 MB SDRAM Chip, CAS Latency of 2, access time of 6ns, PC 133 
compliant.
The DIMM has 4 chips, thus it should be a 128 MB SDRAM DIMM.  The DIMMs 
themselves are labled as PC100 128MB CL2.
The only other marking on the DIMM label is a star - is that a brand?
Still I shall take them in to work tomorrow to see if I can check them 
in a newer machine (target machine is, after all, from 1998).


Rick Moncello wrote:

>>Motherboard: ECS (Elitegroup Computer Systems) P6BX-A+ (circa 1998)
>>BIOS: Award, Upgraded to 6.0
>>This motherboard has 3 168-pin 3.3v DIMM sockets, and (according to the
>>manual) can support only "Dual In-line Memory Modules (DIMMs) which are
>>installed with SDRAM (Synchronous Dynamic Random Access Memory).  This
>>motherboard can support 100MHz SDRAM and also 66MHz SDRAM.  We recommend
>>that you use 100MHz SDRAM with PC/100 Compatibility..."
>>The manual further states:  "The DIMMs can hold memory capacities from 8
>>MB through 128 MM.  You can install one, two, or three DIMMs in any
>>combination, up to 384 MB of standard SDRAM."
>>
>>The vendor says they have sold me the correct PC/100, 128 MB DIMMs (3 of
>>them), but my BIOS reports that I have 192 MB memory (3 x 64).
>>
>>Question:
>>Is there some setting I am missing?  I haven't found one yet.
>>Is the vendor full of hooey?  Do I have the wrong memory?
>>
>
>One thing you could try is going to the manufacturer's website and looking
>up the P/Ns of the memory to find out exactly what the vendor did sell you.
>
>>Is it possible I have a defective motherboard?
>>
>
>Anything's possible, however, I would think that it wouldn't see entire
>sticks of memory, not that it would only see half of what's there.
>
>It's more likely that you have incorrect memory for the MB.  Either the
>density is wrong so that the MB isn't addressing it, or the vendor sent you
>64MB sticks.
>
>>Any advice or insight would be appreciated.
>>
>
>How about guesses? ;)
>
>Good Luck!
>
>Rick.
>
>
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-- 
small is beautiful


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