I am thinking of getting another HD 7850 GPU for crossfire. I have i5 2400 CPU. Will I have bottleneck problems? I have 750W PSU. The games I plan to run are BF3 and GW2. The reason for the crossfire is I really enjoy WvW and now they took off the culling I would like to have the settings on max or near max. The resolution will be 1080p and 2gb for the cards. Small chance of an upgrade to the resolution.