TechPowerUp posted a review on the PowerColor R9 270X PCS+ 2 GB
A quote from the article:
PowerColor's R9 270X PCS+ comes overclocked out of the box and introduces a completely new cooler design. In our testing the card delivers good temperature and noise levels. With a price of $200 it's also the cheapest R9 270X available at this time.PowerColor R9 270X PCS+ 2 GB @ techPowerUp