Legit Reviews posted a review on the Corsair VX450W Power Supply
The new Corsair VX450W power supply incorporates a single +12V power rail that is designed to deliver continuous power under heavy loads while keeping things simple inside the unit. On modern computers the +12V rail is the most important to pay attention to and the CMPSU-450VX has a dedicated solid single +12V rail of 33A (41A on VX550W)...Corsair VX450W Power Supply Review