"Testing of the Silent 1156 reveals that it provides a reduction in temperatures when compared to the stock Intel cooling solution by 8 degrees Celsius at stock speeds and 12 degrees with a modest overclock. When compared to the rest of the field, it is not the highest performer, but does excel at doing its job with a low noise signature."
FULL STORY @ OVERCLOCKERSCLUB (http://www.overclockersclub.com/reviews/thermaltake_silent_1156_/)