@pcaddict its an ebm-papst.... what kind i don't know, but i can say he's full of metall and is really strong But don' put your fingers in there

The Orochi is one of the best coolers i know. Peoples's who means that he is only good as passiv or low-flow, i can say no Never mind, low or high, he's the best performance i know And cooling with him makes a lot of fun