Summary: 2. The two NF-P12 fans come with 3-pin connectors instead of 4-pin connectors. There is no pwm feature. If you need or want the pwm feature you'll have to purchase the NF-P12 PWM fan.
Pros: I purchased two of these kits for my home office computers - one is an Intel Core i7 system and one is an AMD APU system. Both installations were very easy. With the SecuFirm2 Multi-Socket Mounting System the CPU heatsink is held firmly in place. The NF-P12 fans operate at a maximum of 1,300 rpm. Cooling is still good while the lower rpm help reduce noise. This tower style heatsink will fit in tower cases that are a minimum of 8 inches wide measured across the top of ...
Summary: I'm like "ok. . .this cools fine with one fan and the second fan will only drop the temps by another 1-3 degrees and it will be a bit of a pain to install so. . .
Pros: At first I was going to get a cheaper after market cooler and replace the included fan with a noctua fan but after I factored in the price of the cheaper cooler, the price of the noctua fan and the price of thermal paste I realized I'd come out pretty much the same if I just got a noctua cooler which I did. This product cools my i5 well and while it comes with two fans I only needed 1.
Cons: Installation of the fan was a bit tricky which is why I docked an egg. It's also why I'm only using one of the fans.
Summary: From my stock Intel cooler on my 3570K I went from 35C to 28C at idle, and 60C to 49C while playing Diablo 3. With Prime95 my absolute max temps are at 60C, from 72C before. On top of all this, I can hardly hear the fans when at max speeds (mind you this is in a Corsair 550D). Before, the stock Intel cooler was ridiculously loud. This cooler has exceeded my expectations, and for this the price is justifiable. Great cooler, definitely recommended.
Pros: - Very quiet, - Awesome cooling performance
Cons: - Quite pricey, - Fan colours could be changed, but in most cases you won't see them anyways.
Summary: This is the best air cooler in this size range. Twin 120mm fans keep my i7 2600K at 58 celcius max at 4.5Ghz with 100% load after running Prime 95 for 2 hours. Highly recommended for any builder who doesn't want to go for larger heatsinks but still wants to overclock by at least 30%. There are some installation problems with high profile RAM, however, these problems exist for all heatsinks of this size or larger: #1 - For an ATX sized board: If you want to install RAM in...
Pros: Extremely high build quality., Cools like a fridge., Sturdy mount., Whisper quiet fans.
Cons: The fins of the heatsink can be tricky to clean since they trap dust but this is a problem for every heatsink tower out there., Large size can obstruct RAM module on the RAM slot closest to the CPU socket on an ATX sized motherboard. This is also a problem with all heatsinks in this size range though.