CPU as in central processing unit or your case temps?
It seems a bit high that CPU temps would drop 10C by just twist tying cables and wires...and maybe adding a few fans?
I could unerstand if your case temps went down that much, but not CPU tems.
BTW, notfred, very true. All it does is make the case cooler...it achieves nothing other than that. Heh. Well, it makes sense in the summer time so your room doesn't have a space heater in it, but most of the time excessive cooling without the goal of increased stability is useless.
I currently have 3 fans in my computer: PSU fan which isn't too bad, a relatively quiet 80mm fan ghetto rigged on my CPU (twist tied onto some random things to sit on top of it pretty much), and the quiet fan on my 8500DV (which will become the quiet fan of a Ti4200 once someone buys my 8500DV...
*cough*). It's pretty quiet but I plan to do even better than that - hopefully I'll replace my PSU and CPU fans with an 80mm Panaflo L1As and I'll put an Alpha Z heatsink on the Ti4200.

Virtually silent rig...yay!