Many things go into building the ultimate gaming rig. You have to look at CPU, RAM, Hard Drive, and GPU performance. If you decide to go the route of multiple graphics cards, then you need to take a serious look at your power supply and determine if it can handle that kind of load. A good power supply, capable of handling 2, 3, even 4 graphics cards, can easily tag on an additional $200 to the cost of your build. This is where a special niche of power supplies come into play. FSP Group presented us with their BoosterX 5, a special GPU only power supply. For the cost of a 5.25" bay drive and some legal tender, you can save your existing power supply from the scrap heap and still enjoy multi-GPU bliss. So, can this power supply live up to TechwareLab's rigorous testing procedures? Read on to find out.