|Well, the Matrox is not even a 3D card, if memory serves me. The ATI is so old that it probably isn't any better than the integrated graphics.|
You could buy any number of cards for little cash that would be better.
BTW, the two add in cards you mentioned may not even work in your motherboard. The Matrox may be AGP 1x or2X. Don't know about the rage.