To calculate the overall star rating and percentage breakdown by star, we do not use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
Given the outrageous price tags at the infamous Sim Lim Square, I resorted to Amazon to get some Noctua fans to replace the measly stock Cooler Master 140mm fans and have an airflow upgrade at the same time. Only thing that sucked was that I did not check beforehand and found out two of my fan mounts are only 120mm-compatible and I ordered 6. But that wouldn't be a problem anyway I have other plans for these. Totally satisfied with the build quality, silence and airflow. Finally my innards will have enough airflow to keep them cool enough. Reasonable lead time of 7 days even with the Lunar New Year stuck in between, given that it has to ship from the US to SG.