Tom's Hardware posted some benchmarks of the new Matrox Parhelia but the page didn't seem to stay up for long. Here is a summary taken from AnandTech's Web News page, remember that the Matrox drivers are still new and not as mature as the nVidia and ATi drivers. Honestly though, I was expecting better results from the new graphics challenger from Matrox.

Aquanox - Parhelia was beaten by ATI's 128MB 8500 and the Ti4600 nearly doubled the score.
Comanche 4 - Parhelia not breaking the 30FPS barrier at 1024x768 while the Ti4600 broke 40.
Jedi Knight 2 - At 1024x768 the Parhelia was about 30% behind both the 8500 and the Ti4600.
3DMark2002 SE v330 - Just breaking into the 7000s while their test system was breaking 10K with the Ti4600. The 8500 dusted it again as well.
Quake 3 Arena - Parhelia lagging way behind both cards and not even giving deathmatch playable frame rates at 1600x1200 in my opinion.