I own a V11; probably one of the few that do. I am a member of another forum where, whenever anyone mentions they are thinking about getting a V11, everybody tells them that it sucks and got bad reviews. Meanwhile, my V11 is keeping my 2100+ at ~30C. Why? Because I took off the fan grill, which I think obstructs about 40% of the airflow to the HSF. I have read many V11 reviews, and none of them mention the grill. TAKE IT OFF. Don't underestimate this great cooler...