As reputable and independent testers confirm, our HEATKILLER IV processor cooler is still one of the most powerful water coolers on the market. The cooler not only shines with its high performance, it also impresses with its excellent workmanship and straightforward installation. The HK IV can look back on more than 8 years of success and even after this long period of time it is still consistently ranked in the top 3 by independent reviewers. Such perfection can only be achieved with great attention to detail. There are good reasons why the HEATKILLER IV is one of the most revolutionary coolers of the last 10 years.