I'm happy with my scythe ninja with a yateloon 120mm fan. I have a second 120mm yate loon fan as a front panel intake fan and my only exhaust fan is the Seasonic s12 power supply low speed 120mm fan. Case air flow is important. I use a fan controller to adjust the CPU and case fans, although it did alright when I just undervolted them to 5v. It all works and is very quiet, but I also use a much less demanding processor. I'm still left with a high pitched whine from the WD hard drive. If I could go back and change something, I'd probably go with the Seagate 7200.9 single platter 160GB hard drive that is recommended by many of the silent PC folks.