Matrox Parhelia and PTB

Hello,

I see that Matrox gfx cards have been discussed already, but I wanted ask about the Matrox
Parhelia specifically. The gist of my question is: In the lab, we're running XP and PTB using
the aforementioned gfx card, and my program runs much slower (at least 10x slower) on our
computer than on the computer on which we designed it. The faster computer appears to be
*fairly* similar to ours in terms of hardware (core 2 duo vs. pentium 4, 4GB RAM vs. 2GB); the
main difference that I can find is that it uses a Radeon X1300 gfx card. Could I expect that
buying a new card will solve all problems? In other words, will it make that much of a
difference?

Thanks in advance,
Cleo