I've got a similar graphics card, like Fantastik said you should connect 2 separate 6 pin power connectors to the video card. It is a little noisy, I noticed that with my card as well, as long as it's not smoking I wouldn't worry about it too much lol.
The fan on the arctic freezer may block one RAM slot if you face the fan towards the RAM slots. But if you low profile RAM (small ram sticks) you may be okay. If you face the fan where there is nothing then it's ok. Otherwise it's a good cpu fan.