I bought a sapphire hd 6670 1 gb ddr5 today. I believe it is faster thatn the 2 gb ddr3 model. It has vga, dvi and hdmi slots in it. i saw another model in internet which has dvi, display port, hmdi in it. what is the difference. should i ask them to replace mine with the display port model. otherwise i think both have the same configuration. please help.