TechPowerUp posted a review on the MSI R9 270X Gaming 2 GB
A quote from the article:
MSI's R9 270X GAMING provides the lowest noise levels of any card in its performance class, thanks to its dual-fan TwinFrozr cooler. It is also overclocked out of the box, giving it a 3% performance advantage, matching performance with the HD 7950.MSI R9 270X Gaming 2 GB @ techPowerUp