this is my first post i hope you all can help i have a bfg gtx-275 and i would like to upgrade it other specs are core i7 920 running at 3.8ghz water cooled,evga x58 sli motherboard,6gb ram that i need to upgrade also and a cooler master 850 watt silent pro psu in a silverstone temjin case thinking about going to micro center this weekend and picking something out that will be good for battlefield 3