thats mainly because you remove the need to switch states. as your GPU has no full hardware TnL, it suffers from childish stuff that even Geforce 1 / 2 cards (4 years older) had no problem with, which is a sad thing but a fact as well.
The fact that your CPU is a bad joke (mobile celeron = weaker than the last P3 most likely ... your cpu compares to a 1Ghz Pentium M at best) just makes the situation worse.
The fact that your CPU is a bad joke (mobile celeron = weaker than the last P3 most likely ... your cpu compares to a 1Ghz Pentium M at best) just makes the situation worse.