No intended clocking =p Just need to replace the bad one, and so i though, it would be nice to have a pair and make a push/pull airflow system, right?The Excalibur fans have similar CFM, but higher static pressure. That helps when the air flow is restricted, and most air coolers don't benefit as much as say a radiator would from the static pressure. They should work, but don't expect serious temperature drops.
What is the reasoning for the fans?
Is the fan on the cooler dead?
Are you looking to clock that CPU higher?
Like I said earlier. The CM 212 Evo is a good budget cooler, but if you plan to clock for the stars on that CPU, it is not really intended to do that in the first place.