Serious Sam 2 is a classic Opengl first
person shooter and as you would expect due to its aging
(but still graphically impressive) engine, the Visiontek
X850XT has no problem at any resolution with average frame
rates just under 100 at 1600x1200 with all the eye candy
cranked, in fact the lowest frame rate I recorded
was over 65 with literally hundreds of enemies on screen.