There is a SAPPHIRE R9 270 2G GD5 OC VER and a POWER C AXR9 270X 2GBD5-PPDHE for the exact same price and I am wondering witch is better. The 270x is the newer version but due to tha fact that they are the same price it makes me wonder why and witch is better to buy. If you could suggest which is better and why i would be very thankful.