"Dual 2GB NVIDIA GeForce GT 755M Graphics" is Costco's non-tech-savvy way of saying SLI. You can tell because the second card goes into the optical slot, and the one in the OP's link says it has no optical drive.
No dude. You don't understand the numbering of GPUs. A higher overall number does not mean it's a better card. The first number is the series, the second two numbers are the power of it. You need at least an x60 card.
PSN - Srikar || Steam - SilentHawk29 My car: http://img708.imageshack.us/img708/8583/86coupe.jpg