The actual in-game FPS counters are the best way to test the "speed" of your
3D card. Winbench is not that great of a program. As mentioned, several
card companies have been known to optimize their drivers for benchmarks.
Case in point, STB just recently did this to their TNT drivers for the
Velocity 4400 so it would be faster. A lot of drivers now are WHQL (Windows
Hardware Quality Lab) certified. Basically the drivers are tested for
"tweaking" and compatibility problems.
Another example of Winbench 98 problems is that I remember reading a review
of the Starfighter 3D card, it beat out a single Voodoo2 card in overall
score. The marketing dept then used the winbench number (whatever it
represents, I don't know) in their adverti***ts. Funny thing is, Voodoo2
is faster in every game I have seen (e.g. Quake2, Unreal, Forsaken, etc.).
I would stick to frame rate counters in games for the test of speed. That is
the only true test of a card and how it performs against others.
Tom