Thermaltake Toughpower 700W power supply
 

Thinking of building a high-end system with a dual core processor, dual Crossfire or SLI video cards, and multiple 10,000 RPM hard drives, but don’t think your current power supply is up to the challenge? Well, if the PSU came bundled with your PC case, you’re probably right. But, don’t stress out too much about it because Thermaltake has got your back with their Toughpower 700W power supply. This mammoth power supply has four 12V rails, a massive 140mm cooling fan, and an efficiency rating of up to 85 percent! What’s not to love about this PSU?