I use these on my 2 rows of MOSFETs on my ASUS P5Q Pro. I use the straight one for the rear row, and the angled one for the top row. Basically I would susgest the angled one, which is this one http://www.sidewindercomputers.com/thhrty3moco1.html . You can mount it with the slant going either way. I susgest this over the straight one incase you have any clearance issues with the GPU cooler.