You have a 5850 in your laptop?
That should be capabale of 350mhash+ if you tune it correctly.
I doubt you have a 5850 in a laptop however.
Mobility 5850
800 Stream Processors, 625MHz stock
It's based on the 5770 with slower clocks and a few minor differences.
Where my 5650M is similar to the desktop 5570 with slower clocks.