No, I don't have the LED versions.
I have them hooked up to a Bitfenix Recon and they spin at 1300 rpm but I just don't think they are that strong.
I have two on my front grill, when I place a cigarette paper on the grill it sticks but, only just. My friend has some old goodness knows what make generic fan and you could stick a phone book to his front grill (exaggeration) so it just made me think.
Not so keen on the colour of the Noctuna's TBH.
Are Nanoxia any good?