The only real difference between one vendor's Geforce 8800GTS and the next is that MSI pre-overclock the NX8800GTS-T2D320E-HD-OC pretty heavily from the factory. The stock speed of a vanilla GeForce 8800GTS 320MB videocard is 500MHz core, 1600MHz memory. Out of the box this MSI NX8800GTS-T2D320E-HD-OC spins its wheels at 575MHz core and 1700MHz memory.