And will it hinder any performance at all? And how's the quality... I'm scared ,since it's so cheap, it might have bad quality :P
Take a look at your case, and see how much cooling you'll have for the GPU. If you have a good 120mm fan pushing in air in front of the GPU, you can pretty much pick any 7970. If your case is a little restricted in flow, you might need one with a beefier cooler.