FrostyTech posted a review on the Phanteks PH-TC12LS Low Profile Heatsink
A quote from the article:
In this review Frostytech is testing the Phanteks PH-TC12LS heatsink, a top-down low profile heatsink that stands 74mm tall and weighs in at 500grams. Like the Phanteks PH-TC14S heatsink Frostytech tested here , the Phanteks PH-TC12LS relies heavily on aesthetics. The aluminum fins have been painted black, which is not an ideal surface treatment because it insulates the aluminum fins from the surrounding air mass to some degree.Phanteks PH-TC12LS Low Profile Heatsink Review @ Frostytech