You're looking at the oc edition then, the dhs edition is 600 pounds, they're not very conventional, but a ln2 kit is liquid nitrogen, you know right? They are obly used for competitive overclocking competitions, so go for dhs, i did a lot of research between the both and the looks, leds and the clock speeds you can reach on air made me get the inno3d, comes with a mousepad and a free copy of firemark