DragonSteelMods.com posted a review on the FSP Booster X5 450Watt Multi-GPU Power Supply

Today for review I've got a supplemental power supply from FSPGroup called the Booster X5, it's a 450 watt PSU that fits into a 5.25" bay of your case, it's made just for your video cards with four PCIE power connections built in. The idea behind this product is to give the user a little extra power for those newer, power hungry video cards, it's a great way to supplement your standard power supply if it can't handle it instead of going and buying an entire new power supply for your system.

FSP Booster X5 450Watt Multi-GPU Power Supply Review