Difference in 1333 DDR3 Memory

[Trickster]

Can someone please explain to me (or point me in the right direction) the subtle differences between the following 1333 DDR3 memory:

1) DDR3 1333 (PC3 10600)
2) DDR3 1333 (PC3 10660)
3) DDR3 1333 (PC3 10666)

I want to buy some but am confused by the different numbers.

Any assistance would be appreciated.

Thanks!

[GSKILL TECH]

They are essentially the same. Just slightly different because of the chips being used.

Thank you
GSKILL TECH

[Trickster]

Thank you for answering. That's all I needed to know.