A few different tricks prevent your hard drive from working unnecessarily often in Disk Power Management (decreasing noiselevel as a nice side effect).
硬盘电源管理给出了一些技巧，使硬盘在不必要的时候不工作，而且还能减少噪音。
2
The noiselevel of the power supply will also significantly decrease due to better cooling efficiency.
噪音水平的因素是电源也将大大减少由于更好的冷却效率。
3
Round the feature of the ultrafast speed, make the detailed description of phase noise, receiver noise figure, launch power, threshold level of system.