TIGHT VOLTAGE REGULATION
V1200 manages to keep the +12V rail within ±1% at all times, even better than Digital PSU
The 12V rail is the most important part of a modern power supply. Both the CPU and graphics cards, the two most important and power hungry components in any computer, are powered by the 12V line. Voltage fluctuations can cause anything from high pitch noises, lowered CPU and VGA overclock capabilities, system instability or even damage components.
Source : COOLER MASTER V1200 PLATINUM