The stock fan that came with the 370-series was the Papst fan. There was no included stock fan for the 462-series as users may wish to use whichever fan they wish. Since most vendors sell the 462-series heatsinks with powerful Delta fans, I have chosen it as the "stock" fan. For comparison against quieter alternatives, the fans I chose were the Thermaltake 60mm fan which I found to have the best noise/performance ratio. As for the 80mm fan, it was just the regular Sunon 80mm.
Review Link : OCAddiction