I'm looking at getting either the Radeon HD 7870 or the Radeon HD 7850. I am not sure whether I would need the 7870 or if I can survive just using the 7850 and reduce the cost by $100. I also heard that the Twin Frozr was very helpful in keeping it cool/quiet. So if I plan to do a lot of gaming would it be worth it to get the 7870 or would the 7850 suffice?
Also I am unsure on compatibility. Would all those parts work together with the suggested motherboard?