I forgot if we are including the price after rebate or not. I think, once you factor in tax and shipping, if $120 is the absolute limit, then the 5770 is out of range. The cheapest 5770 on Newegg is the HIS 5770 for $140, but $110 after rebate.http://www.newegg.com/Product/Product.aspx?Item=N82E16814161338
The next best card is the GTS450, which is a little cheaper. The cheapest GTS450 on Newegg is the ECS GTS450 for $115, but $95 after rebate (+$7 shipping) + a free copy of HAWX 2. http://www.newegg.com/Product/Product.aspx?Item=N82E16814134119
The EVGA GTS450 is $130, but $100 after rebate (+$4 shipping) + a free copy of HAWX 2.