TechPowerUp posted a review on the PowerColor R9 290X PCS+ 4 GB
A quote from the article:
PowerColor's R9 290X PCS+ uses a large triple fan, triple slot cooler, which promises improved temperatures and noise levels over the AMD reference design. The card is also overclocked out of the box by +50 MHz GPU and +100 MHz memory, making it the highest clocked R9 290X out there.PowerColor R9 290X PCS+ 4 GB @ techPowerUp