well the GTX 460 draws a max of 160W as compared to a new 560 draws 150 watts maximum and that requires a 450 watt power supply. actually i just checked and they both need a minimum 450 watt power supply which aren't expensive at all. you can get an Ultra 550 watt at tigerdirect for $50 (http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3276574&CatId=1079) with a lifetime warranty. i run one of their 600 watts and i've had 4890s and 9800 gts in my case, as well as multiple hard drives eight gigs of ram, two nics and a phenom x3 processor in an Antec 900 case with three 120 mm fans and a 200mm and it never crashed or showed any signs of overloading. Considering that you can get a GTX 460 for +- $135 and the psu for 50 for under 200 you can get a great psu and a great card. At TigerDirect both come out to $223.xx with econoship which is only 7 dollars, and theres a $30 mail in rebate for the 460 so you walk away in the end with both for just over $190, under your max price cap of $200. Good luck!