Is there a PCI Express Video card that requires little power wattage?

im looking to buy a video card for my pc im looking in the price range of 30-60$

i have a low power supply which has i think 250 watts, is there any card out that will run with a low power supply, please help. Links appreciated|||These graphics cards consume less than 50 watts:

http://www.newegg.com/Product/Product.as…

http://www.newegg.com/Product/Product.as…

http://www.newegg.com/Product/Product.as…

http://www.newegg.com/Product/Product.as…