Tom's Hardware > Forum > Laptops & Notebooks > General Laptops & Notebooks > Thinkpad A21 memory
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Anonymous   03-24-2005 at 02:34:51 PM

Archived from groups: comp.sys.laptops (More info?)

 

I purchased through an Amazon reseller a memory chip for a Thinkpad A21.

According to the ad the memory was:
"SimpleTech STEK860/256 256MB PC100 Non-ECC SDRAM 144pin SODIMM"

I've read before that PC133 memory is likely to not work, so the PC100
sounded like what I needed. When the memory arrived, sure enough, it
was PC133. Sure enough it didn't work. And it wasn't a SimpleTech.

When I contacted the seller I'm told by them the problem is the memory
configuration (should be 16X8 instead of the 32X8 they sent) and not the
speed.

Everything I've read in these newsgroups say it's very iffy if a PC133
will work in a Thinkpad. Does anyone know if there are any other
considerations other than speed.

If it was my ignorance I'll take my lumps. If not, I want them to make
it good.

Thanks,

John

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Anonymous   03-25-2005 at 04:53:01 AM
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Archived from groups: comp.sys.laptops (More info?)

 

John Worman wrote:
>
> If it was my ignorance I'll take my lumps. If not, I want them to
> make it good.

It's not your ignorance John and they need to make it good.

For a 256MB stick for the T2X series (and many other Thinkpads) regardless
of whether it's PC100 or PC133 it MUST be lo-density, e.g. it must have 8
memory chips per side, not 4.

Lo-density PC133 RAM is pretty rare, so hold out for PC100.

Regards,

James

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