I'm pretty sure it can, but the right side buttons can be somewhat annoying for some finger grip styles.

there's only 800dpi or 1800dpi in the db3g driver, but the lower one might actually be 900dpi. tbh that doesn't matter

Can it do 500hz polling? what is the default polling rate of the mouse without any drivers?

Default is 125hz. You need a program to change it to 500hz.

The default hz on it are 125hz, u need to usb hack it up to 500hz.

Its sensor can do 800 and 1800 dpi as mentioned. Only problem is, you have to install the razer drivers for 800 dpi, the mouse runs default at 1800 dpi which is only changable with the drivers afaik