I'm getting an Areca 1220 card soon for a 5 disk raid5 array, but from the looks of it and reviews it seems that tiny fan and heatsink make a lot of noise. I'm interested in seeking out a replacement heatsink and fan, but I've had no luck finding centerline dimensions for the heatsink mounting. Could someone measure the center to center of the pushpins that hold on the heatsink and post it here? Has someone already done this and found a good replacement? I'm building a water cooled computer so there will be very limited airflow in the area. Thanks in advance!