Interesting post re angle of fans. I just ordered the ZM80A-HP along with a Papst 80mm fan and Nexus NX-3000 PSU. It was my intention to try and fit the fan to the Zalman 123 bracket thus:
That would mean the fan is blowing right on the GPU, providing of course that I can adjust it correctly. The other, easier, option would be to simply attach the fan to the bracket at 90º - this may even be advantageous as it would be blowing on both sides of the video card.
I don't have a fan at the lower front of my case so I was wondering if it would perhaps be a better idea to fit the fan somewhere down there so that it would blow through the case towards the PSU's exhaust fan. Or indeed, perhaps I should fit two fans, one in the lower front area of the case and the other to the Zalman bracket, which leads me to my next question...
where do these fans get their power? 3-pins plug into the mobo and 4-pins to the PSU, would that be right? So if I have already used the 3-pin connector for my CPU HSF, where do I plug in any additional fans?