The memory is strangely white warmer than memory without heat sink, even though my fans they mitkühlt - probably is the fact that the heatsink so close together as hardly fit through air (with me) that ^^ But I am very satisfied, the memory is fast but I do not have contacts him. Otherwise I could even tell you what timing he creates no problems in which clock. So there's nothing to complain about except the stronger (with me) heat generation when the RAMs are side by side. Therefore 4 of 5 stars and a strong buy recommendation.