this guy could be a complete computer newbie, suggesting for him to build his own could really be bad heh. here is one, it's open box but it has a gtx 460. if the motherboard has core unlocker that would be a big help, not sure if it does.http://www.newegg.com/Product/Product.aspx?Item=N82E16883227334R
also has a 700w PSU, and the gtx 460 is the 1gb version. sounds good, but the open box part might be bad. free shipping.