As you have been able to notice we have been pushing more and more power supply units in our reviews over the past few months, and for a good reason. High-end gamers PCs these days need a good power supply unit (PSU). The power consumption that a PC can create these days is a little unheard of. Why you ask ? Increased transistor counts, higher clock frequencies and hey let's not forget the "Dual" trend. We have multi-core CPUs, and instead of one graphics cards we now have the option to double up graphics power with cards in SLI or Crossfire mode. Such a PC during a gaming session can average at 400-500 Watts power consumption ... so now you can see why these little old grey 300 Watt PSU's we had 3 years ago are by far not sufficient anymore. A PSU needs to manage the demand in a very secure way otherwise it'll create instability throughout the system. That instability can result as crashes, freezes, underperformance and even resets or shut downs of the system completely. Do not underestimate the importance of the PSU.