OK, so I recently purchased a brand new GTX 670. Before purchasing the video card, I checked the power requirements for it here which says that it only requires a 500W power supply. So I was like, great, I've got a 500W power supply, I should be fine and dandy. Fast forward to today where I've just purchased my new Gigabyte GTX 670, and on the box it says that requires a minimum 550W power supply for it to work. So I'm like WTF, why does it say on the nvidia website that it only needs 500W, yet on the Gigabyte box it says that it needs 550W? Anyway, my question is, can I go ahead and try to install the 670 in my PC which only has a 500W power supply, even though the box says that it needs 550W? Is there any chance that I might damage components if theres insufficient power? Or should I not take the risk, and fork out the extra cash for a new PSU instead?