Fan Noise

For easier comparison of PSU fan noise results we have seperated our test results into three groups with a chart each:

• Up to 500W: Typical PSU ideal for a single video card system.
• 500W to 750W: Plenty of power available for most single and dual video card machines.
• Over 750W: For the most hardcore, power hungry and overclocked setups.

Even though Sunbeam claims the fan is temperature controlled it did not show in our testing. This could be because our load value of 320W is only a fraction of the maximum power delivery capability. However, the unit is not "Super Quiet" as Sunbeam advertises. The noise levels are definitely acceptable though especially if you plan on using this in a hardcore overclocker's system where noise is secondary and performance comes first.

Sunbeam has done some testing on their own over a bigger load range:
With a load of 100W the fan noise is 18.3 dbA, at 300W it's 20.7 dbA, at 600W 24.0 dbA and at 1000W 29.76 dbA. This should show that the fan does ramp up speed indeed, but our test load is probably too small to pick it up.
Please note that these numbers were provided by the manufacturer.