k um..........i think he already told you to how to get it to 2.7GHz and still have ram at 200mhz, just put the divider on 5:4, why would you want lower speeds? i guess if its cooling your worried about, the TSunami would be able to handle it, it has 3 fans, and then a HSF thats enough......and u did use thermal paste right? i would guess its ok.