Good news. The 140mm rig is finaly finished and I have now moved on to the overclocking portion of the build.
Here are the specs:
Xigmatek Prime SD1484
i5 2500K
MSI Z77A-GD55
4 GB (2 x 2GB) Crucial Ballistix @ 1333 MHz 1.25v
SeaSonic X series SS-400FL
Corsair Force 3 60 GB
Lian Li Pitstop PC-T60






As with the old rig, this one is 100% passive with no moving parts to generate any noise, that is till I mount a fan to the heatsink.
I cut the extra fins on the memory sticks for them not to interfere with the exhaust flow. I should also mention that the memory natively runs at 1866 MHz with 9-9-9-27 timings @ 1.5 volts. I lowered the frequency to 1333 MHz with the same timing but reduced the voltage to 1.25 volts. I did this to minimzie heat generation that could affect the results. ANOTHER thing I did was to put both sticks in the furthest memory sloths so that they wouldn't cause problems with larger fans, meaning that they're running in single channel mode which doesn't really matter in my test suit.
Many thanks to Xigmatek for providng me with the heatsink and extra fans.
PS: The rig boots from loading screen into windows in less than 4 seconds which I find astonishing.