Hehe, you need to start at the top of the forum here. Might want to learn to overclocking and find a good air solution first.
Never hear of a 17 920. We don't cool our ram, a good air solution is enough.
Got a lot to learn, no need to spend $250+ just to learn overclocking is past your current abilities.
SLOOOOWWWW DOWNNN. Learn. Dreaming is great untill you ruin a $200 Mobo or a $300 GPU. Your stuff!