What is the (S) in ram modules labelled as PC12800S

shawn_6

Reputable
Oct 10, 2015
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4,510
I have DDR3 Micron RAM that is labeled PC12800S. What is the 'S' suffix here? I've seen it on a few other manufacturers ram as well.
 

Mycroftxxx

Honorable
May 3, 2013
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10,520
Slow. The F part, PC12800F, will perform better.

Actually, is it for a notebook computer? I've seen that used to indicate SO-DIMM, small outline dual in-line memory module, notebook memory.