As an average over all the games tested, the Voodoo2 had a 13% improvement over the Voodoo1 when Vsync was enabled.
Enclosed are my results. I am not sure why Vogons is resizing the first and last image, but not the middle one. Click for full size images. The system specs are as follows.
- Biostar MB-8533UUD motherboard
IBM 5x86c at 133 MHz (2x66 MHz FSB)
64 MB FPM RAM (single stick)
256 KB cache in write-through mode
Matrox G200 16 MB (2D PCI graphics card)
Audician32plus (ISA sound card)
Promise UltraDMA 100 (PCI hard drive controller card)
3dfx glide patches used whenever possible
Voodoo1 and Voodoo2 were run at 640x486x16
The last chart is probably the most telling.
The percent increase in frame rate when using a Voodoo2 over a Voodoo1 on a 486 ranged for 0% to 36%. The most iconic game, GLQuake, showed an increase of 26.1% when Vsync was enabled and 18.8% when Vsync was disabled. In general, the values with and without Vsync were about the same, with a few exceptions. For those exceptions, the benchmark results generally inceased when Vsync was disabled.
As an average over all the games tested, the Voodoo2 had a 13% improvement over the Voodoo1 when Vsync was enabled, or a 11% improvement over the Voodoo1 when Vsync was disabled.
The Voodoo2 had slightly better signal quality in 3D and with 2D pass through. The Voodoo1 can sometimes appear too light, but this should be adjustable with the gamma controls contained in the driver. Aside from the generalised increase in frame rate, the other benefit of using the Voodoo2 is that running the card at 800x600 often came without any performance penalty. With a few rare exceptions, the Voodoo1 is limited to 640x480.
One benefit of the Voodoo1 is a smaller PCB. The Voodoo2 in my case just barely touches the back of the hard drive. Another benefit of the Voodoo1 is perhaps a slight increase in game compatability, although it does seem like there are work arounds for the Voodoo2 in most cases.
Of the games tested here, I personally consider them all playable, with the exception of Incoming, Unreal, and Turok 2. Turok 1 kept crashing after about a minute of game play, on both cards. Hexen II GL is marginally playable. There are many other early 3D games which play just fine on this system, however they are not included because they either do not have or I did not bother to look for a frame rate feature.