I don't understand the people who go on about how one will need push-pull 220V fans to get anything out of this beast :/ Traditionally the X-changer rads tend to be fairly open finned like the PAs which means you'll probably find that most fans can push air through them. Take a rad and look through it, they're just loads of small tunnels, make them shorter or longer, it doesn't add that much resistance, what does is how small or close together they are...

Personally I can't wait to get some nice tests of this beast as it may well provide a nice jump in cooling which hasn't been achieved for a while in the rad department.