Wish Google translation didn't suck so much. Study on twin tower architechture Very thorough article. It really shows the ability of the Nehalem to separate coolers when they can appear similar on a 775 setup. I also like how he talks about his 775 roundup. I think it shows that he is even skeptical of his results (IFX in the 775 roundup) and his testing procedure. Makes for better and more consistent results. There's also a thoroughness to the article that I don't think you see much in the way of reviews when it comes to coolers. A few pages I found interesting: vDimm and VVT influence on temperatures Comparison between clamping systems Noctua NH-D14: WOW factor Cooler comparison pics I think the last one is interesting to look at in light of the fanless results.