AnandTech has a review of the ATi Rage Fury MAXX posted. This card uses two Rage Pro chips that each render one frame at a time. In theory, this creates a small lag because the relatively slow Rage Pro takes twice as long on a frame as a GeForce:
We’ll first state that a number of gamers were given the opportunity to play a few games of Quake 3 on the MAXX, followed by a game on an NVIDIA GeForce. None of them noticed any lag issues, whether they were on a LAN game or a modem game (of course the modem itself introduced lag). Playing at high resolutions or low resolutions did not have any effect either. In fact, even with all this talk on the internet, we’ve yet to see claims of anyone actually feeling the lag – it has all been theoretical so far.
Our take on the situation is this: a “normal” 3D card is actually already rendering the next frame while the current one is being displayed. This technique is called double buffering and is used by all current 3D accelerators. An optional mode of many cards is the use of triple buffering, where one frame is being displayed while two more are being rendered. Sound of kind or like the MAXX? you bet. In essence, you can think of the MAXX as performing a complex version of triple buffering. Of course, there have never been any complaints or issues with triple buffering, so there shouldn’t be any with the MAXX either. As far as we’re concerned, the issue of lag is a no longer an issue with the MAXX.