Originally Posted by Hugh is daft
Same old, temps are always a margin better with the two intakes running, it does however make things much much more time consuming trying to figure out optimal fan speeds and whatnot as the front intake fans will have an influence on the bottom set when run flat chat. I prefer this setup as it means I can achieve the same if not better temps whilst keeping the fan speeds whisper quiet, Hope this helps !
What are we talking, 1-2c diff? At least it helps with positive pressure, if that's your thing!
I swear you used to be able to buy 45degree fan adapters, I reckon they may help. Just can't find them anywhere.
A fan controller would really help with this sort of tinkering. I'll probably order a Lamptron FC5 V3 soon and put my old Noctua nf-p12's in the bottom and let you know how it goes.