As a notebook user, this card is one of the best NVIDIA GeForce GTX 280M but only with strong cooling system. The ATI FirePro M7740 is just 1 level below the first one also with good gaming power. The last card I can recommend for notebooks is the ATI Mobility Radeon HD 3870 X2 which combines 2 Mobility Radeon 3870 graphics cards on the MXM boards.
How old is your notebook ?
Depending on the age perhabst you should purchase a new notebook. Not completely sure though.