Yes, your score is about right given your default CPU speed. You could REALLY improve your score by running a higher FSB speed and overclocking your CPU (even 10*200 FSB). Of course, you would have to get some better/faster memory. Your video card overclock is very good... you are simply being held back by your CPU/FSB/memory speeds.
As a comparison, I scored about 15.5k with my Ti4200 @ 300/675 and my 1700+ Tbred @ 2.4 GHz (11*220 FSB).