How much power does this power supply actually make?

I'm looking at the power supply from my computer and the two lines of text that mean anything to me read: +5V & +3.3V 120W MAX. The Total Power Max 250W This is kind of confusing to me, which number is actually my max wattage? 120W or 250W? I'd like to know so I can judge whether or not it can... show more I'm looking at the power supply from my computer and the two lines of text that mean anything to me read:

+5V & +3.3V 120W MAX.
The Total Power Max 250W

This is kind of confusing to me, which number is actually my max wattage? 120W or 250W? I'd like to know so I can judge whether or not it can handle my new video card.

Thanks in advance.
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