You could be thinking of the Kyro and Kyro II tile-based rendering GPUs, PowerVR/ST. It was supposed to revolutionize how games were rendered.
Yeah, the Matrox Parhelia if I remember the name correctly. Everyone was excited for it, but then it was either a dud or never even released, I don't remember which.
Attack Out Of The Blind Spot: Matrox Parhelia-512
Matrox is back! After long abstinence Matrox wants to shuffle the 3D-Cards again. The long awaited 3D chip Parhelia-512 comes with lots of qualities.
They both existed, and while the Parhelia was not really good for anything, the Kyro II had a few wins (like Serious Sam, if I recall correctly). Anandtech had a nice Kyro II review back in the day. Sadly it's no longer available. Sadge.