Don't know, but they claim "it's fast enough to run Quake II at 28 fps on a PIII/733 MHz, 69 fps on a P4/2.2 GHz, and 101 fps on a P4/3.06 GHz." They do not specify at what resolution.
The interesting part is this renderer's features. This thing supposedly supports bilinear filtering and alpha blending. I don't think I've ever seen a realtime software renderer with bilinear filtering!!! I can't wait to see some screenshots of this thing in action.