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Corsair H50 will give you all the clearance you need and will perform pretty well. But without knowing more about your motherboard, case, and such, we can't really tell you more.
Without knowing your specific gigabyte motherboard and assuming you have regular g.skill ram with low heatsinks, any of the heatsink fans should be fine. I use a tuniq tower 120 on an asus p5q with g.skill (8gb) ram and it's fine.