Summary: got concerned when the box didn't list 1155 as a supported socket.. but it does. newegg is correct..
Pros: Size.. This is the biggest heatsink that can fit inside my FractialDesign Node605 case. it does not block anything on my MSI Z77A-GD65 motherboard. each ram dimm is populated with a tall heatsink-ed stick of ram.. no clearance problems.
Cons: pushpin tabs.. i don't like pushpin tabs because plastic is fragile.
Pros: I have this installed on my i5-3570k for almost 6 months now. My room is 24C and as I type this my processor is 33C (@3.8GHz). I have found that I can't hear the cooler running at 1400 RPM so I don't let it run above that speed unless my CPU breaks the 60C mark (which it never has).
Summary: The Good: I use arctic for a Gainward GTX 570 edition, it does the job very well. It will take a little bit long to install this monster on my card. First of all, I have to detach the old cooling fan from the card. The layout is quite different between these two fans. The fins of AX PLUS ii is thinner and denser. I guess it will increase heat transfer and dissipation. The fans are long and high, I suggest that you should measure the size upon your purchase.
Summary: I oriented the HSF so that the fan is on the side closest to my video card (PCIE slot) and blows air upward toward the top of the case (away from vid card) because I have an exhaust fan on the top of my case (heat rises).
Pros: CPU used: Intel Core2Duo E8500 @ 3.16GHz (stock)
Cons: Size. Standard ATX cases should generally be fine (mine is standard ATX, and the cooler fits easily). The dimensions are listed in the "details" section, so there are no excuses for not measuring to make sure it will fit properly. ;) If you have tall heat spreaders, you may have an issue, although with my motherboard tall heat spreaders are not an issue at all - I have about 1/2 inch clearance between memory and HSF.
Summary: - This is nitpicky, but the thermal paste does not have a plastic cover (on the heatsink). You basically take the cooler out of the box, and the base with the thermal paste is exposed. I'm not the brighest, but I put it down on the table without realizing this, until I lift it! Just watchout.
Pros: - Nicely build. Seriously, as soon as you take it out of the box, you see the quality of the metal of the heatsink, as well as the fan.
Cons: - The push-pins for Intel CPU come pre-spread. Making it tricky to insert in MoBo, not big deal though, but you have to be aware of that, before you try to push then real hard and probably breaking them.
Summary: Having a long-shafted screwdriver will make things easier as using too short of a shaft will have the handle of the screwdriver hitting the fins of the cooler, forcing one to hold the screwdriver at an angle to tighten. Remember to alternate tightening of the two screws so an even compression of the thermal material will occur.
Cons: None really. Directions are picture only, but it's fairly obvious how to install this. I did not need to remove the motherboard to install it. Once unpackaged, the thermal material is exposed so be careful when handling or setting the unit down. It may seems obvious, but remember to orient the black mounting bracket correctly prior to inserting the retaining pins. Speaking of which, these white pins were somewhat of a pain to install as the bottom of them were somewha...
Pros: The fan runs quiet, and keeps my CPU temperatures low. For the price, what else can you ask? The install on my AMD motherboard was a piece of cake. As others have said, be sure to watch the video on Newegg, because the instructions that come with the fan are worthless. Snap the fan off, install, snap back on. Takes just a few minutes.
Cons: I have an AMD motherboard, and as others have said, unless you put the RAM in slots 1 and 2 before installing this CPU fan, you will have to sacrifice them. I think the notch on the fan allows just enough room to have the RAM in there, but you will have to put them in before installing the fan or else you won't be able to get in there to do so.
Pros: 4 pin connector. Quiet. Thermal compound included. The size is decent, and is the expected size for 92mm vertical. The build quality is really nice. I like how the fins are sealed on the sides to force air all the way through the heat sink.
Cons: The mounting brackets were a bit cumbersome for AM3.