Pity, under OS4 or MorphOS the Radeon would dust a Voodoo3. And both of those OS' support Warp3D funtionality with the Radeon.
I haven't made any tests recently, but in old times (MorphOS 1.4.5) Voodoo3 wasn't that bad compared to Radeons, actually pretty same level beating some Radeons

Here's my old test with Peg1 and MorphOS 1.4.5:
Quake I fps Quake III fps
R7000 36 1
R9200 SE 71 22
Voodoo3 3000 71 25
R7500 Club3D 85 23
R8500 LE 100 24
R7500 ATI 100 25
One thing to consider is that Voodoo3 only has 16 bit depths, while Radeons have 24/32bit.