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be quiet! Straight Power 10 CM 600W Review


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The be quiet Straight Power 10 CM 600W is using the Silent Wings 3 135mm fan (model BQ SIW3-13525-HF). This fan is rated to run up to 1,500rpm although it is going to run much slower under most situations. At maximum speed it can push 70.2 CFM.
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This power supply looks like an FSP OEM design and the overall build quality is quite high. There are a few heatsinks to help with heat transfer. The company are using an Active Clamp + SR (Synchronous Rectifier) design.
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This uses IC controllers instead of older style passive components, so the power conversion is constantly monitored and always being kept at optimal efficiency level. Active Clamp + SR is a cost effective topology to create power supplies with an 80 PLUS Gold certification in Watt ranges up to 800 Watts.
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They are using a DC to DC system to generate +3.3V and +5V voltages. All of the Straight Power 10 power supplies offer four +12V rails except the 400 watt unit, which has three. The Straight Power 10 can handle 97% of the available power to the +12V rails.
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The design is using a Chinese TEAPO capacitor in the primary stage. It is rated 420V 330uF @ 105C. We were a little disappointed to note that be quiet! didn't instruct the OEM to use a higher grade Japanese capacitor (Nippon Chemi Con, Rubycon etc) for the primary stage, but clearly they are working to fairly tight margins. Second side capacitors are also Chinese 105c rated.
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Above, the modular PCB board.
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The hard wired cable is sleeved into the chassis and protected within a grommet. This will ensure the cable won't fray against the metal chassis over many months of use.

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