I can say that that cooler will not allow you to oc and will be a lot lot louder than 30db like they claim. I would bet the sound at more like 40db and that is not compensating for turbulence caused by the HT also, actual CFM is more around 60cfm at best. I have an extensive chart that estimates real world fan performance from box specs so there is a method to these claims. If you want a heatsink that is going to let you OC, you need one that has more than 3 heatpipes a large surface area and great mounting pressure. I may have misphrased my previous post resulting in you misunderstanding importance of mounting pressure and those other things. I was not saying those are minor detailes to be overlooked. I am saying those are HUGE detailes to be wearry of. If you want to overclock you must take these factors into accound in order to ensure that you can squeez out the most bang for your buck.

I might be able to help more if you can answer the following...
How loud do you want the computer:
How much money can you speed on cooling:
How much do you want to overclock:
How long do you want it to run for:
How long do you want the computer to work: