just a comment on the single slot cooler. it would be fine except it may go against your airflow. in mine, i don't have that problem, because i only have one exhaust fan in my case. i just left the bracket off the empty slot(s) below the card hoping it might draw some fresh air in from the back. anyway, if you have a 120mm intake in the front or something like that it will be blowing against the airflow of the card. just to clarify that, the single slot cooler sucks air in the bottom and blows the hot air toward the front of the case.