I am one of many people who has had a bad experience with a cheap power supply. It happened to me about 6 years ago. I had just purchased a new motherboard and CPU setup that required a 24 pin connection. My PSU only had a 20 pin connector on it. Being impatient, I decided to run to my local PC shop and pick up something that met my power requirements on paper, however ended up being a no name brand and very "inexpensive". When I hooked it up at home, the system booted up perfectly fine. At this point you'd think everything was good, right? Well, after a good session of playing Counter Strike, I started smelling burning plastic, heard a pop, and sat there dumbfounded looking at a blank screen. Luckily, the cheap PSU didn't take anything out with it..
Power Supplies are one of the most important things you can put in your computer system. You have to remember that a computer system is nothing but integrated circuits. Electricity is the lifeblood of these circuits. In order to have a computer system run optimally, clean power is necessary. That means an efficient power supply that can deliver anything that the system demands. It also means a power supply that is made out of quality parts to smooth out and deliver the best signal possible to all of the components. A good PSU won't make your system faster(unless you have a bad PSU causing problems already), but it will help prevent unwanted instability and ensure the maximum lifespan of your internal components.
The Antec HCG-750 Power Supply is but one in the new line of High Current Gamer Series PSUs. The HCG-750 advertises a delivery of 750 Watts of continuous power. The HCG-750 comes with many features, the first being four high current +12V rails. These rails have a high over current protection set point for high end GPU compatibility. The HCG-750 is constructed of all Japanese-brand capacitors for excellent reliability. There is a 135mm double ball bearing fan for quiet operation and high air flow. The 750 is 80 Plus Bronze certified and boasts up to 88% efficiency. There are 4 gold plated 8-pin (6+2) PCI-E connectors and gold-plated High Current terminals. Safety protection features industrial protection with over current protection, short circuit protection, over temperature protection, over voltage protection, and over power protection.