Summary: You can't even tell this is running and I've had it for over a year already. I do have the current speed maxed out and have not been able to get my PC to over heat even with OCing to 5.2GHz (on a 2700k) Very simple to use and install. Highly recommended!
Summary: I love this as it keeps my CPU super cool in my 600D case. No issues with mounting, no issues with leaks. Would recommend this to anyone. The only thing that might be a bit of a letdown is the price.
Summary: I have Corsair memory, power supply and CPU water cooler. It is quiet and works as advertised, awesome for overclocking. I used to be very critical of water cooling because of possible leaks, but you know things can happen, water cooling is the way to go if you are a PC enthusiast.You are probably afraid of installation or messing up so was I, but it is really easy to install.
Summary: Lots of coolers can keep a CPU in its recommended operating range. Want to overclock? Well then you will need some extra cooling power and the H100 delivers. Added bonus is that it is very quiet to boot.
Summary: This is my first liquid cooler. I have to say it was more simple to setup than I thought it would be and looks awesome too. I run my AMD 8-core at 4.0Ghz from factory 3.1Ghz and it stays cold even under sustained full load. I could have saved some money and gotten one of their smaller models but I don't regret this one. Awesome.
Summary: Before you buy the H100 make sure you plan to have this behemoth in your case, but if you are reading this you probably already thought of this. Ok, so lets get down to it: I installed the H100 in a Thermaltake LevelGT case on a Asus Evo motherboard running a AMD Phenom II X4 965 Black Edition. Obviously, this is a AM3+ socket. After watching a youtube video I expected to mount this to the CPU using the provided back plate, but the installation is far easier.
Summary: Slightly challenging installation: nearly zero documentation, missing 4 washers, and extremely large and awkward. Once installed, it performs quite well. I filled in documentation gaps from the web and fabricated the needed non-conductive washers from some handy cardboard. BTW, even with careful measuring before ordering, the unit is so large it almost doesn't fit my case.