做多少事，说多少话。
沧者极限 - 全汉FSP Hydro X（黑爵士X）550W开箱测试
http://goo.gl/h7VSyS
"另一侧是噪音曲线与转换效率，电源负载在70％以下是维持低转，约700RPM，噪音值低
于15dBA，相当不明显，超过70％才会提高转速，最高约1100RPM，噪音值约在23dBA。"
原价屋@酷！PC ‧ 检视主题 - 【开箱】DC-DC 金牌电供再添一员！全汉 黑爵士X 550W
开箱。
http://goo.gl/p25Kx2
"侧面有产品规格、风扇噪音图及电源转换效率图，可以看出黑爵士X 550W 在负载70%之
前风扇都维持600RPM 15dB左右噪音，相当安静，而就算到100%负载风扇转速也在1200RPM
以内，噪音表现也不到25dB，电源转换率部分在50%负载下效率达90%以上，并且贴有代理
商视博通的贴纸。"
FSP Hydro X Series 550 W Review | techPowerUp
Value and Conclusion
https://goo.gl/Fcrz7o
Fan RPM, Delta Temperature & Output Noise
https://goo.gl/K882ed
What gave me lots of trouble during testing is its really weird fan profile
that is due to a poorly placed thermistor that provides temperature
information to the fan-control circuit.
因为提供温度数据给风扇控速电路的传感器摆的位置不好，在测试过程中，奇怪的转速配置造成我很多困扰。
FSP attached this thermistor to the main transformer instead of finding a way
to monitor the +12V FETs' temperatures, which results in a lousy fan profile
that has the fan run at an almost steady 1200 RPM throughout the PSU's entire
operating range at normal operating temperatures.
全汉将感应器贴在主变压器上面，而不是另外找方法监控12V输出的电晶体温度，这糟糕
的风扇转速配置，造成在风扇常温下几乎是工作在1200RPM。
To make things worse, the fan also spins at close to 1200 RPM at light loads
where the HGX450's fan only spins at 700 RPM.
更糟糕的是，在轻载时风扇转速也是工作在 1200 RPM上下，其中HGX450的转速只落在700 RPM左右。 (这段不确定意思)
I received two HGX550 samples, and the fan behaved the same with both, which
suggests that FSP should look into this matter as soon as possible.
当我收到 HGX550 送测品时，风扇测试的结果也是相同，建议全汉应该尽快针对这个问题
做出调整。
With a proper fan profile and a much lower price close to $70, I would have
no problem whatsoever in recommending this unit since it uses reliable
quality components and performs well overall.
在合适的风扇转速配置与价格之下，推荐这颗可靠品质好的电供，倒不是问题。
Good:
Full power at 46°C
Efficient
Hold-up time
High quality electrolytic caps
4x PCIe connectors
Very efficient 5VSB rail
Compact dimensions
Warranty
Nice looks
优：
全载时46度C
高效率
高保持时间
高品质电容
四个PCIE接头
本体尺寸紧凑
5VSB输出相当优异
保固
外观好看
Bad:
Very high MSRP
The fan's minimum RPM should be much lower
The fan-control thermistor is poorly placed
劣；
建议售价过高(实际售价合理)
风扇最转速应该能设计的更低
风扇控速的温度传感器摆放的位置不好
懒人包：
一般消费者看图说故事，HGX 风扇只工作在600～1200RPM，低转又噪音的好伙伴！
实际测试，风扇转速从1200RPM起跳，全载时落在1600转左右，应对风扇转速做出调整。
（环境温度：29正负1度C）