[Ace001]

Hey guys,

I've had a lot of trouble with my onboard video chip, which is a nVidia GeForce 9200.
I have a Aspire AX3400 desktop, which is smaller than a regular PC. I'm buying a Low-Profile card. I can run games like CoD4, but with huge framedrop.
I'm at the point of buying one now, but I need help

Question is: I've got a 220w PSU. But at the videocard page, at the technical information, says that the vc needs minimal 300w PSU.
What will happen if I buy it and put it in my pc?

Thanks

EDIT
I've found out the following: the shop where I bought my computer also sells a version with a ATI Radeon HD 5570 already in it. I've found the HD 5570 product page and it's saying the maximum board power is 39 watts. Will I be able to run my pc with that card? Since it comes with the same desktop, and even a better cpu?