TechAddicts posted a review on the BFG LS Series LS-680 680 Watt Power Supply
Overall, the BFG LS-680 offers great performance at a reasonable price. This power supply would be perfect for anyone looking to build a quad core system with multiple video cards, especially because it offers SLi certification for up to two NVIDIA 8800 GTS'. At around $120, this power supply offers a great value. I feel that the price is about right and is competitive with other companies offering comparable wattage power supplies. The five year warranty is also good.BFG LS Series LS-680 680 Watt Power Supply Review