Note: Both Windows and Linux were ran using 16 bit colour depth.

Windows Quake II OpenGL (640x480)
689 frames, 10.6 seconds: 64.7 fps
618 frames, 10.0 seconds: 62.0 fps
Mean: 63.4 fps

Windows Quake II OpenGL (windowed)
689 frames, 10.6 seconds: 64.7 fps
618 frames, 10.2 seconds: 60.8 fps
Mean: 62.8 fps

Windows Quake II Software (320x200)
689 frames, 14.8 seconds: 46.5 fps
618 frames, 14.2 seconds: 43.6 fps
Mean: 45.1 fps

Windows Quake II Software (640x480)
689 frames, 31.7 seconds: 21.7 fps
618 frames, 30.5 seconds: 20.3 fps
Mean: 21.0 fps

Linux Quake II glx (640x480)
689 frames, 15.3 seconds: 45.1 fps
618 frames, 14.0 seconds: 44.0 fps
Mean: 44.6 fps

Linux Quake II softx (640x480)
689 frames, 37.7 seconds: 18.3 fps
618 frames, 35.5 seconds: 17.4 fps
Mean: 17.9 fps

Linux Quake II softx (320x200)
689 frames, 17.2 seconds: 40.1 fps
618 frames, 16.1 seconds: 38.3 fps
Mean: 39.2 fps

Linux Quake II soft (640x480)
689 frames, 34.5 seconds: 20.0 fps
618 frames, 32.7 seconds: 18.9 fps
Mean: 19.5 fps

Linux Quake II soft (320x200)
689 frames, 15.9 seconds: 43.3 fps
618 frames, 15.2 seconds: 40.6 fps
Mean: 41.9 fps

Note: The following was ran on my main Arch Linux computer.

Linux Yamagi Quake II (1680x1050):
689 frames, 1.0 seconds: 674.8 fps
618 frames, 0.9 seconds: 683.5 fps
Mean: 679.1 FPS