What kind of temp's are you getting with the 1000s? I was looking at putting 2x 2000rpm Silent Eagles on it.i use 2x sharkoon silent eagle 1000rmp.

I might make the move to i7 920 eventually, is the H50 up to the job if overclocking to ~4Ghz?
I keep coming across the noctua fans, are these any good.. appart from the odd colour scheme
looks like the H50 has been pulled, not available on OcUK or any other online retailers.
anyone know whats going on with these?
I trust you're comparing the true with the two apache fans to the H50 with the two apache fans, and not using a worse fan set up on the heatsink?after 2 hours of prime the hottest core it only 63c it was 69/70c with my old TRUE!
SourcePush Vs Pull - This depends on fan speed/power. The high speed fans at 2000RPM with a 38mm fan thickness provided the best performance in a push condition. The slow speed fans with 1350RPM with a 25mm fan thickness provided the best performance in a pull condition. I would estimate that performance line is likely to cross in the 1500-1700RPM range where they are equal. So.... slow speed = pull, high speed = push, medium speed = it doesn't really matter.
 
	