I'm still new to this and and working on my first gaming PC build and was pretty set on the Radeon HD 7850 but decided to take a look at the 7870 even though I'm under a pretty tight budget. After shopping around I found this... SAPPHIRE 100354OC-2L Radeon HD 7870 GHz Edition 2GB. I have heard that Sapphire is a quality brand but why is this card cheaper than all the others? Is there something wrong with it?