Whats the difference between the MSI 7970 BE edition and MSI 7970 OC/BE edition?

[KaiserPhantasma]

Whats the difference between them is it just that the other one is already boosted and the other one is boosted AND overclockable?

 

[bicycle_repair_man]

Both are overclockable, it's just that the 7970 OC/BE has a higher out-of-the-box overclock.

 

[KaiserPhantasma]

Both are overclockable, it's just that the 7970 OC/BE has a higher out-of-the-box overclock.

that it?

might I also ask how do I know if my set-up us currently/effective on crossfire mode?