Identifyimg RAM

How do I identify a SIMM or DIMM just by looking at it?
bellhouseAsked:
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BGoodwinCommented:
A DIMM will be MUCH larger that a SIMM.  A SIMM is usually 3-4 inches long and 3/4 to 1 inch in height.
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bellhouseAuthor Commented:
I am aware of the difference between modules, I need to know how to identify the size and type.
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satwaCommented:
To do this correctly you would need the lettering and numbering
system from each Ram manufaturer, in order to identify
the memory size, type and speed of each chip.
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blueforceCommented:
EASY -

A SIMM will have a row of chips on only one side of it hence SINGLE IN-LINE MEMORY MODULE

A DIMM will have a row of chips on both sides of it hence DUAL IN-LINE MEMORY MODULE.

As far as FAST PAGE, EDO, DRAM, SDRAM, SGRAM, etc. that's a little bit trickier.

Fast Page and EDO are small, 30 or 72 pin modules whereas DRAM and SDRAM are 168 pin modules.  
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wyreCommented:
You cannot tell the sizes of SIMMS or DIMMS just by looking at them.  It would be hard enough to even identify the manufacturer alone.  Different manufacturers use different configurations of chips on the memory, making it nearly impossible to tell one from another.

The easiest method is to put the memory in a computer and see what the memory test declares the DIMM is.

Could be tricky with SIMMs if you don't know what they are. If it's a Pentium system you're testing them in you'll have to correctly pair them up or the system won't work.

In that case, you can try single SIMMs in a 486 (which doesn't need to be paired up with like memory).
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bellhouseAuthor Commented:
thanks.... looks like i have a long and boring job on my hands...
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