It seems that there are at least three or four distinct GT 630M hardware profiles. You probably have the renamed GT 540M if you have 96 CUDA cores.http://www.geforce.com/hardware/notebook-gpus/geforce-gt-540m/specifications
With a core clock frequency dropped from 1344MHz to 950MHz, the specifications would probably match exactly. The memory frequency difference is probably not actually different, just measured differently. The processor clock frequency is double the GPU frequency of cards that use the hot-clocking technique. It is not used on Nvidia's newer Kepler GPUs, but it is used on their Fermi GPUs. So, not all GPUs have a processor frequency. Your GPU frequency will not go anywhere near 800MHz under any circumstances except maybe if you manually overclock it and even then, it probably doesn't go that high.
Your GT 630M is almost definitely performing as it should. It has a lower clock frequency than the GT540M that it is probably based on, so the lower performance seems to be normal.