@sxndy, either run two off one header with a y splitter (potentially dangerous, check with asus what the fan headers are rated for. The p5q premium can output 24W on its fan headers, but I don't know about the deluxe). Or get a fan controller/resistor. Or slightly rewire the molex to 3 pin adapter youre using, you want the fan drawing power from 12V and 5V not from 12V and 0V. It means pulling two pins out of the molex plug and swapping it over, google wil provide a lot of images if you can't visualise what I mean. That'll run it at 7V steady, which is generally quiet enough