Summary: You might still find them manufacturer direct, or might find an updated version.
Pros: Efficient at keeping your CPU cool with proper installation. Mine has been on there for over 3 years, and I haven't gone over 65°C, even during the summer. I live in LA, in a home with poor HVAC and insulation. Fan has an arrow indicating airflow to assist installation and airflow planning. The fan is removable and can be placed on either side of the fin array, or can be used in a push-pull configuration.
Cons: If possible, install the cooler before putting the motherboard in the case. People with thick fingers and a lack of patience might experience profuse swearing[I did not misspell that], small cuts, and nicks on the hands. Be wary of the rubber fasteners used to fasten the fans to the heat spreader frame. If not treated gently, these proprietary parts could be difficult to replace.
Pros: -Very quiet at low speeds. -If you run extreme loads on your processor and don't mind a little extra noise, you can easily turn up the speed for massive air flow. -Easy to install! Even in my mid tower there is plenty of room for this cooler.
Pros: Initially, first 3 months, kept my CPU at a nice ~7*C, after a few more months and the dust started collecting a bit it still kept my CPU temp down at a nice ~14*C and that's with moderate fan settings! Excellent fan setup.
Cons: A bit tight if your RAM sits high as one of the fans will extend over them, unless you have banks on both sides then it obviously extend over both sides but it sits high enough to comfortably sit over them with out causing problems.
Pros: On full load with A10-6800K CPU temp is 37C (with fan controller) its a little tall but but oh well, some cases might have a problem since the heat sink has little spikes on top, was pushing the limit on my case but I am using a 4U case since running lots of rackmount equipment. over very nice and gets the job done!
Pros: I love this cooler In my system I have FX 8320 clock at 4.4 Ghz with one fan pull configuration running low speed 12C idle 39C max under load, held steady after 15 minutes of Prime95 with all 8 core running.
Summary: I had to order the socket 2011 brackets when I upgraded to socket 2011, but that was a year ago. I'm not sure if it now comes with them or if they still need to be ordered. This fits quite well on the Rampage IV. The heatsink itself does not block any ram slots, but the attached fans do block one on each side if you use both. I went with indigo extreme TIM recently, temps idle in the mid 30's at 4GHz.
Pros: One of the better air coolers, i've used it with a Core i7 920 and a 3930k with excellent results.