I think is callisto not calypso.
lol, you're correct.
As for unlocking, I don't bother. I'm one of those paranoid of unlocking freaks. Aside from that, from what I've read, my M4A79 has a horrible track record of instability with unlocked cores. :shadedshu
Edit: actually,
this guy has the exact same batch as mine and unlocked his pretty well! Ehhh... I already put the 720BE back in, and I'm too lazy to swap the "callisto" back in to try it. Either way it is YMMV, I do not guarantee it will unlock based on the results of another.