should I change gfx card?

[Sorex]

Hello,

My cab pc had a Xentor Maxi Gamer gfx card.

Now I was checking what I still have here of spare cards and one of them is an  ATI Rage 128 Pro/Ultra 32MB (PM8913-980) with such yellow tv in or output connector.

Will this be better than the Xentor one?

And would that allow me to display something higher than the 320x240 region of modes on my Hantarex Polo 28" ?

note: I use jammASD to connect it

Edit: I looked at the back of the monitor today and it's a 28" Polo and not Polo2, nothing to see about the frequency on the labels tho so it's prolly fixed 15?