What type of CPU cooling system does the 400SC use?
Dell opted for a simple, quiet and effective cooling solution. The 400SC uses a single, temperature controlled 92mm fan at the rear of the case, right under the power supply, with a plastic duct that sucks the hot air off the top of the heatsink and out the rear of the case. This is also effective in lowering the overall ambient temperature of the case because it’s forcing cooler outside air in the front vents due to the pressure differential. The majority of the 400SC family ship with a standard aluminum heatsink, but the 3.2GHz model ships with a heatpipe heatsink and a louder, more powerful fan. A Prescott 3.4 EE – the “fastest” 478 available – can be installed, though the cooling system will need a small amount of modification. The OEM heatpipe heatsink, part number 9Y212, is required, as is a fan with at least 42CFM in a 92mm x 25mm form factor to replace the stock case fan. This will keep the processor, which dissapates 102W typical, at about 61-62C under full load (64C maximum p
