Wierd Memory

Ok, anyone know what the hell pc3 10700H (667) SPD Ext. XMP.
I want to add more memory but I can't find any memory like this.

It is just DDR3 1333MHz RAM... Take a look at the memory tab in CPUZ to find the timmings and grab some on Newegg.

What is the difference between pc3 10600, pc3 10660 and pc3 10666?
No clue what mine is. It doesn't say on the stick or on the box.

The numbers refer to peak transfer rates which some manufactures round down... The actual number is 10666 and 2/3 MB/s. So instead of writing out all the 6's they just cut it off after the first second or third sometimes.

In short, they are all the same.