Did the Katana excited now for 3 weeks at the start and am. My CPU temp has dropped with the Katana to ~ 12 ° C in idle (previously AMD fan I was in idle at ~ 48 ° C !!). The part is also something of quiet that you almost think it would not work. :) To control the fan speed, I use a small freeware utility "SpeedFan". I have installed the Katana on a Gigabyte board (GA-870A-USB3), on which an AMD Phenom (tm) II X4 965 Processor (3415 MHz) ELT.