Overall, the ProlimaTech MK-13 provided solid performance when equipped with any of the three configurations of fans and was able to operate quietly or provide the best cooling out of the three heatsinks tested. Personally, I would equip it with some form of fan control so that it can be adjusted between quiet and performance mode on the fly with a good pair of fans. With higher end cards like the HD 5870 testbed, you will need to use fans since running passively is just not an option in a standard case.



Link: Overclockersclub