This is my hopefully final Aria setup, after a number of changes. The airflow is 100% reversed from stock.....it is now completely positive airflow. All the stock vents remain unchanged, but the stock PSU is removed, replaced with a dc/dc converter, and powered by an external 15A 12V power supply (Radio Shack). The 200w converter powers the P4 Celeron 2.4 without problems. The voltage rails are fairly stable......the input is 13.5V and the 12V rail is usually 12.5V, dropping to 12.2 during benchmarking.
In the place of the stock PSU, there is a Yate Loon 120mm blowing into the case, the airflow directed at an XP 120 by a three-sided duct. On the rear there is a simple intake muffler, with the air entering from the bottom. This duct overlaps the video card, providing ambient temperature to both the CPU cooler and the Video card heatsink. This video duct lowered the card temp over 20C from the previous negative pressure setup I first tried.
While it probably would not work the same for all setups, this positive pressure airflow works excellent in this Aria, and combined with that heatsink, allows an idle speed of about 750rpms, with the CPU at 35C (ambient of 21C). The fan speed is automatically regulated by an M-Cubed Fan Amp......at max CPU usage the Yate Loon reaches 1350rpms, and the temp stabilizes at about 45C. The board temp stays around 39-41C.
The only temp problem I have with this setup is with the hard drive. There is little airflow over it, so I added a 60mm Delta, regulated by a Fan Mate to 5V......HD temps max around 42C. Not too bad, but I think a laptop drive would be better in this setup. FWIW....this case could hold two 3.5" drives, in it's current configuration.
This setup is amazingly quiet from all angles, even from the rear. You wouldn't know it was running, except for the front blue lites. At max rpm, all you can hear is a slight woosh from the Yate Loon. There is plenty of padding in the case, and four places for the exhaust to escape. I'm certain Antec never envisioned an Aria running like this......but it works great.
The next mod to this setup will be a CPU upgrade, and an intake air filtration system. I like this thing quite a bit.....
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