Arctic Cooling Silentium T2

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Let's start with a macro view of the case.

PSU in front bottom, two 80mm exhaust fans where the PSU normally goes.

The power supply is mounted vertically, with two 80mm fans blowing down on it to keep it cool.
More on the HDD Muffler mounted direct behind the PSU.

The fans on the PSU blow opposite to the natural direction of convection: Straight down. This is not a very efficient arrangement because it means that the fans are fighting rising heat.

NOTE: The PSU is substantially wider than the ATX standard (as wide as the case), and the distance between the fans and exhaust is shorter. This had to be done to accommodate the dual 80mm fans. It allows for a very open airflow path through the PSU especially with the bottom grill for the PSU exhaust being so unrestricted.

The normal power supply location has two 80mm exhaust fans.
These fans are connected directly via a dedicated lead that goes into the PSU. The voltage appears to be thermally regulated.

The airflow in the Silentium T2 is explained by this diagram from the Silentium product page.

Air is drawn in from the rear of the case and exhausted at the top.
A secondary air path runs through the power supply out the bottom front of the case.

A quick look at the airflow diagram makes sense of what Arctic Cooling is trying to do with this case. In a conventional ATX case, the components that need the most cooling, the CPU and the video card, are not cooled efficiently because the air that is drawn in via front mounted intake fans is warmed by other components in the air path. In the Silentium, the air intakes are located directly beside the CPU and the video card, meaning that the air that cools them is drawn directly from outside the case before other components have a chance to warm it up.

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