How many grid and block have 9800GT?

my question is how many grid and block have GeForce 9800GT? what is the dimensions of grid and block?
how can I know this?
it’s very important or simply I invent?
I need for Cuda.
thank you,

grids and blocks are software
block is maximum 512 threads, grid is maximum 65535x65535 in size. this is the same for all CUDA capable cards.

thank you E.D. Riedijk!