Never mind. I just reviewed a thread that explained the reading as a single thread speed that has to be multiplied by the number of channels, ie. DDR2 = core speed x2. Sorry for shooting first.
Even that's not quite right. P55 motherboards use DDR3 in two channels. X58 motherboards use the same DDR3 in three channels.
Either the article you saw was not quite accurate, or you misinterpreted what you read.