so im ready to upgrade my grpahics card, but heres my dilema. i want something that is going to be stable, good performance, run cool(under stock temps) what i have come up with is either the http://www.evga.com/Products/Product.aspx?pn=03G-P4-3788-KR or the http://www.evga.com/Products/Product.aspx?pn=03G-P4-2784-KR what would be a better choice?