Hello, I purchased a hypo 210 evo CPU cooler, and I noticed the massive fan on it sounds like it is always on full speed. I tried to cut the speed down in the BIOS but it barely made a noticable difference, much less theR RPMs stayed the same. It also makes this faint rattly sound that if you get close, it is clear. Is the fan just so big it is the airflow that is making so much sound, or is it non responsive with the motherboard header.