That's some science, right there.
The Yate Loon D12SH-12 you recommend are not PWM, right? Does that mean they'll be running full bore all the time? I don't have any external fan controller or otherwise.
How does PWM work with dual fans in push-pull anyway, don't most motherboards only have one 4-pin connector for the CPU?
Sorry for noob questions, considering getting a Megahalems for my SandyBridge build. Thanks for the work you've done.
The Gigabyte boards I have seen support both PWM and Voltage control of fans via the cpu header. Either that, or buy one of
these - fan controller that accepts PWM signals and controls fans via Voltage.
As for controlling more than one fan with a single header, use one of
these - 4-pin Y-cables, able to fit PWM or Voltage controlled fans. Just be sure to nip one of the yellow wires so that only one fan reports rpm to the fan header. I've had four controlled that way. You could have twelve Gentle Typhoons on a single Gigabyte header - they're limited to 1 Amp.
But rather than get a Megahalems I'd recommend a Super Mega. It has the low-profile tensioning screws that allow you to mount 140mm fans. Can't do that with a mere Megahalems. Then you can mount two Thermalright TY-140's. They are the PWM-controlled 140mm fans that come with the Silver Arrow and Archon. Great fans, and quiet.