OK, lets say u have a case fan on your case panel right above ur memory. Then what? the only thing the dominator fan can do is direct the air between the slots where the cooling should occur. It can only do good not harm. i agree the 80mm fan will help cool it even more but for people who can't place a fan directly above the memory this is great, and for those who can, then cheers you can cool your memory very efficiently, the 80mm fan can blow the air from the outside and the dominator fan can blow it between the slots to the ram chips/heatsinks where it needs to go at. see the air being blown in form the 80mm will now be directed at the memory heatsinks, and with more pressure then if the dominator fan wasn't there. The dominator can place the air between the slots and place it where it needs to be plus it brings in new cold air and pushes the old air out with pressure cooling it much more efficiently then just an 80mm fan. all the 80mm fan above ur memory does is blow air into your case, that air cools your motherboard (not the NB or SB) better then even cooling your memory. This fan uses the air in your PC, just like any other component (VGA, CPU, chipset) air directed randomly will not dispatch heat. thats like holding a house fan in front of an open case. doesn't work unless the air is forced to take in the heat