Scythe's Fuma heatsink is a fair size at 137x149x130mm with a weight of 920g, including the two 120mm fans, though shorter than many on the market.  That stock design could cause some problems if your RAM has impressively sized heatsinks but for most modules you should not have any issues and it does not impinge on your first PCIe slot.  In the tests Modders-Inc performed reasonably well when cooling an i7-4770k at stock speeds, unfortunately an overclock of 4.4GHz did see the cooler struggle and the CPU frequency was throttled back almost immediately.  For lesser loads the low RPM fans will be able to keep your temperatures reasonable and do so without creating much noise.  If you have a midranged CPU and want a quiet cooler in the $55 range, drop by to check out the full review.

"Heatsink designs are driven by the fundamental principle that a larger surface area equates to better heat dissipation than a smaller area. Factoring in componential consent, modern aftermarket CPU tower heatsinks had to get creative to compensate and dial-in the efficiency needed, hence the rise of dual-tower cooler designs"

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CASES & COOLING