"With Quake 4 being available for retail sales here in the
United States for a couple of days now, and even the Linux
binaries, we've already posted over 120 in-game single player
screenshots here and on release date posted a slight preview into
the world of Quake 4, but now is our first time delivering
frame-rate performance results from inside Quake 4. Making this
more than the usual performance testing, we've compared our Quake 4
results against that of Doom 3. As Quake 4 is powered by a tweaked
version of id's Doom 3 engine, it will be interesting to see the
difference in frame-rate, if any, between these two popular
games..."