My system has Duron 1.3G, ECS7S5A motherboard, 512M 2100 DDR on it.
Ti4200 Video Card, I just run a 3dmark on it, the score is strangely low.
So I checked the system info and suprised to find the FSB is only 66!!
The manual of ECS7S5A said it should be 200 for Duron CPU, (200/266 for Athlon)...