I have the same problem, tho my gpu is 3400 it was 3450 when i sent it to warranty service.
in idle mode the clock are gpu:54 mhz memory:126 and in preformance mode gpu: 249 mhz and memory: 247 mhz. both of the preformance clocks should be twice as high.
tho is it possible to flash an integrated graphics bios... or does it even have a separate bios. Anyway tried it, no with no luck. Also I havent found an oc program that would of worked for my lappy. I have also tried different bioses for the motherboard.