Questions about VGA card for Mac G4.

My lab members try to find a VGA card which support 200Hz refresh
rate in 1024 x 768 resolution for our exp..

And we just get the information of Radeon 9800 PRO MAC Edition made
by ATI. (info is available at
http://www.ati.com/products/radeon9800/radeon9800prome/specs.html)

According to brchure, this support the refresh rate we need, but we
still don't know 2 things.

Before buying this card, we need to know followings.

1) Has anybody tried this graphic card and managed to get 200Hz
refresh rate ?

2) Does this card support 10-bit video signal output ? (I can't find
out this info anywhere in brochure.)

If you know about this graphic card and have tried this, please
share your knowledge with us.

thanks.