after comparing the Asus GeForce 7800GT with the Asus GeForce 6800GT
for a difference of 20 dollars i assume thats 25 euros :P

you get 2 extra games and 50MHz Engine Clock speed difference for the 7800 GT only for 20 dollars more

is it worth it?

This is SpArTa!! oh im sorry, I must have took a wrong turn..somewhere...(runs away)