My P400 case only had a stock fan on the front and the air intakes are small. Temperatures will be a bit high and there won't be very good airflow. Place the 2 140mm fans in the front and move the stock 120mm fan up. Temperatures are cooler and the red LEDs look pretty cool too. The fans are louder than a single 120mm fan, but not annoyingly loud. Although it doesn't really matter if I'm wearing a headset. The quality seems good, no problems so far. Cable length can be an issue on some builds. I also bought a fan splitter cable that helped connect the bottom fan as it didn't reach the power supply. Overall, I'm very happy with the performance, quality, and looks of this product.
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