PC2100 vs PC133?

hellrazor

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Feb 18, 2004
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I just wanted to know what the difference was between PC2100(DDR133) and PC133, since they both seem to run at 133Mhz. I need to put more memory in an old computer, never paid much attention to it before. Which is better?
 

Crashman

Polypheme
Former Staff
PC2100 is DDR266, it runs at a 133MHz clock rate and 266MHz data rate (data cyled twice per clock).

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cheepgeek

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Nov 5, 2004
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these are 2 different types of RAM. PC133 is 168 pin, PC2100 is 184 pin. big difference. some mobos take both i believe, but find out what you have first. you can take out your current mem stick and look for a tag saying what it is or look up the part number online for specs.

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