can i run a recommended 300w min graffix card on a 250w PSU?
and what would happen if i did?
More aboutgraffix card
I wouldn't recommend it, but then again video card manufacturers have a tendency to put higher energy requirements on video cards to avoid being blamed by people who have a crappy psu's. I highly doubt that a 250 w psu could handle the card, and the potential of frying your components is just not worth the risk. Instead I would recommend buying a high quality psu and replacing the one you have. It's a fairly simple process and you should go to newegg.com to find one that fits your price range and requirements.
Not enough information is given here, such as the card in question and the PSU.