Danoded :
The black editions come without a heatsink and a very good aftermarket CPU heatsink is needed for overclocking so that's why.
bullshit
"black edition" means the chip comes with an unlocked multiplier, that has nothing to do with the cooler
every boxed amd cpu comes with a cooler (notice "boxed", not tray cpus)
I guess it's cheaper because of a special offer or just luck imho