I just put them through the H100's
They are a bit pricey, especially for just 1, hmm..
Isn't it like the h100i where there is two fan headers to plug into for rpm control? Isn't that what he's talking about? From there I'd assume he's got it in CPU fan header.
I have been using both Noctua NF-F12's and GT1450rpm fans. No doubt the Noctua's are better fans, but the GT's look way better, and are sure up there. Both keep my 2500K below 75C during prime, on 7v and are virtually silent. (i cannot hear them over the pump). For now, i stick with the Noctuas, as they are more silent when upping the fan speed.