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Installed in a high position in a BeQuiet 500 case, it works wonders. It works very efficiently and quietly, and easily manages to keep my Ultra 7 265K core below 80°C in full bench mode.
The finish is top quality, and BeQuiet even provides a bottle of liquid for the recommended maintenance after 2 years (readjustment of the level). Maintenance is easy thanks to a hatch on the radiator.
And if you've got the budget, you can replace the fans with the new silent wing 4 high speed fans. And then... you'll have a truly efficient and silent machine.