EVGA GeForce GTS450 vs XFX HD-5770?

which is better?



http://www.newegg.com/Product/Product.aspx?Item=N82E16814130572&cm_re=EVGA_GeForce_GTS450-_-14-130-572-_-Product



http://www.newegg.com/Product/Product.aspx?Item=14-150-447&SortField=0&SummaryType=1&Pagesize=10&PurchaseMark=false&SelectedRating=5&VideoOnlyMark=False&VendorMark=false&IsFeedbackTab=true&SelectedRating5=5&Keywords=(keywords)&Page=1#scrollFullInfo|||The 5770 is proven to be faster than the GTS 450