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VR-Zone Exclusive: SilverStone SST-ST45SF 450W SFX PSU Reviewed

With the test system still warm and cooking, we probed at the +12V CPU power input, and the +3.3V/+5V power pins of the 24 pin ATX connector. Due to the heating effect of current, resistive losses in the choke coils of the LC filters are expected to contribute to significant voltage loss. By measuring the rails on load, we get to see DC voltage regulation capabilities of the SST-ST45SF. Intel’s SFX Power Supply Design Guide specifies the limits of voltage regulation in the below table:


The following shots compare the difference in voltages measured between full load (all 2D/3D stress tests running, meter on the right) and idle (system left to idle on the Windows desktop, meter on the left).


Again, the SilverStone SST-ST45SF impresses with its impeccable voltage regulation despite heavy loading.


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