A capable CPU cooling system. (Temps are at the end of the review) Installation: This thing is tall, I installed it in a full tower case (Thermaltake Armor+) and still had only about 1 inch between the top of this cooler and my access panel. It cleared my ram banks on my mobo (Rampage II Extreme) but with about 3/8" to spare my ram benefits from some of the fan overblow. The mounting bracket is solid and installs easily. The directions did not say what to do with the washers that came with the installation kit, I put them on the screw posts prior to inserting them into the mobo figuring it would keep the metal plate from putting leveraged pressure on the cooling block behind the cpu. I used the included thermal paste although I added four very small dots (1/8") about 1/4" in from the corners of the cpu in addition to the pea sized dot in the middle the instructions called for (though my "pea" was more like a popcorn kernel. This is because with a heatpipe design sometimes the thermal paste gets channeled out in the grooves on mounting surface since it is not perfectly flat to allow for even spread of the paste. Make sure you tighten the mounting nuts in turn and in order. failing to do this will result in a skewed installation and poor cooling since the downward force on the cpu will not be consistent at all points. Due to the back plate you will have to remove your motherboard from its mounts to install this unit (unless your mobo tray allows access behind). Also make sure you orient the exhaust fan toward your main exhaust in your case. There are arrows on the fans to indicate exhaust and intake (in general fans always exhaust on the side of the fan where the wires are). Benefits: I like that this cooler uses standard 120mm fans. This means if you have to replace a fan (because they do fail) you have literally hundreds of choices and are not stuck trying to get a particular type of fan (shroudless etc...). I use an external fan speed controller so that I can dial in the speed based on my use. Limitations: Unless you have a mid or full tower case I doubt you would have the space you need to install this cooler. The push/pull design means that you must replace your fans with pairs of identical fans otherwise the cfm may not match and you could lose efficiency. Also the instructions leave something to be desired, they are pretty basic and are not very helpful. The A70 is a capable air cooler. With maximum load temperatures just 10 degrees above what the stock cooler for an i7 920 (at stock speeds) idled at. The temperature breakdown is below: All temps in degrees C. Ambient/Idle/Prime95 99.1% (after 30 min.) Stock Cooler i7 920 stock speed: 20/44/87 (Fan Speed variable) Corsair A70 i7 920 stock speed: 20/31/54 (Fan Speed 1600 rpm) This cooler does a lot better than the stock Intel cooler. You can really tell the benefits of the added surface area looking at the delta between ambient and idle and full load. With prime 95 running for 30 minutes there was only a 23 degree change, vs. a 43 degree change using the stock cooler. This was using the fans at their quiet range of 1600 rpms. If I max out the fans (3000 rpm) the temps leveled out at about 20/28/48. But with the fans maxed out it is fairly noisy, whereas at 1600 rpm, it is not even as loud as my exhaust fan. Specs: i7 920 Asus Rampage II Extreme Mobo 3 x 2 Gb G-Skill ram Nvidia GTX 295 GPU Sound Blaster X-Fi Fatality Platinum Sound Tagan 1100 w PSU Thermaltake Armor+ Full Tower 2 x 300 GB Velociraptor 10000 rpm HDD (raid 0) 1 TB Seagate 7200 rpm HDD Scythe External fan controllers