I dont know if its true or not but here\'s a link.
http://www.coremagazine.com/news/3463.php3-----------------------------------------------------------
In accordance with our recently printed interview with Microsoft executive Robert Back, Microsoft has officially revised the speciifications for the XBox graphics processor. Originally expected to run at 300MHZ, the finished GPU will run at 250MHZ. In addition, the processor will be capable of producing 125 Million polygons/sec, down from Microsoft\'s original 150 Million/sec projection.
-----------------------------------------------------------
Please Don\'t flame, this is just something I found and want everyone to see, as I said, I dont know if its true or not.