When it comes to high performance heatsinks there aren't a lot of models shorter than 135mm. Oh there are plenty of tower heatsinks with some of the lowest temperatures a PC enthusiast can hope for.... but nearly every tower cooler is over 150mm tall, most 160mm. The Thermaltake BigTyp 14Pro heatsink stands 127mm tall, uses a big 140mm fan and plenty of heatpipes to get the job done.