Hello, I am building my first gaming pc. I am going to be playing battlefield 3 and the new games to come on at least medium-high settings. Which one would do it better? The specs of the one I am building are: Intel Core i5 2.9GHz 8 GB of RAM 1 TB HDD Biostar TZ77B LGA 1155 ATX Intel Motherboard I dont know if the XFX Radeon HD is better than the SAPPHIRE Radeon because the SAPPHIRE has 2 Gb of GPU RAM but it is DDR3. The XFX Radeon HD has only 1 GB but it is DDR5. HELP me!!!!!!!