DDR3 1333 has 3 version ?

[oslama]

Why are there three version of DDR3 1333 ?

I am seeing this on NE

DDR3 1333 (PC3 10600)
DDR3 1333 (PC3 10660)
DDR3 1333 (PC3 10666)

Is it speed, latency or compatiblity (system or voltage) ?

 

[leadpaint]

This is just marketing. Pay no attention to it. Basically, the most important and non-nonsense number is the number immediately following the DDR1/2/3.

 

[Quiksilver]

DDR3 1333 (PC3 10666) would be the better choice as it is the most common.