Thermal Design Power (TDP) represents the average power, in watts, the processor dissipates when operating at Base Frequency with all cores active under an Intel-defined, high-complexity workload. Refer to Datasheet for thermal solution requirements.
Thats as defined by Intel, officially. 65w is the Average. At base frequency, 3.4GHz,not turbo at 4.0GHz. Running 4 cores, Not 4 cores with hyperthreading enabled. Not even close to maximum power. For an i7, you'd be looking at closer to 130-140w under Prime95. Which will make a hyper212 scream.
You cannot over-cool a cpu. Not mechanically. It's impossible. The only thing a higher grade cooler will do is lower the fan curve, which lowers fan rpm. This will continue to a saturation point where there's so much cooling ability, fans become relatively unnecessary. Bigger cooler just mean better ability, not necessarily better.
You could easily slap a NH-D15S on that cpu and never hear the fans ramp up under any load. There's a rather large difference between what's comfortable and whats the minimum necessary.
Personally, I can't stand the hyper212, any of them, from the original hyper212 to the hyper212 plus, to the EVO, led, all the same cooler with the same pita! mounting system with nothing but a paint job and a change in fans. It was a mediocre performer to start with, and is still mediocre. The only reason it became popular was its $25 price point putting it $10-$15 cheaper than its competition. Even now, it relies on name to sell, the EVO is $30 and the new Black is over $40. There are far better designs to be had, even the 92mm Raijintek Aidos gets exactly the same temps, if not 1°C better, and really is $20. At 136mm tall.
CPU Cooler: Cooler Master - Hyper 212 Plus 76.8 CFM Sleeve Bearing CPU Cooler ($39.89 @ OutletPC)
CPU Cooler: Cooler Master - Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler ($29.98 @ OutletPC)
CPU Cooler: ARCTIC - Freezer Xtreme Rev.2 Fluid Dynamic Bearing CPU Cooler ($33.89 @ OutletPC)
CPU Cooler: RAIJINTEK - AIDOS 48.6 CFM Sleeve Bearing CPU Cooler ($18.55 @ Amazon)
CPU Cooler: Cooler Master - Hyper 212 RGB Black Edition 57.3 CFM CPU Cooler ($39.99 @ Amazon)
It's not even a competition any more.