I'm not sure about down clocked 3500's but....
Falcon Northwest did release a Voodoo 3 3500SE card which had even faster clocks @ 200!! Basically cherry picked parts.
http://www.sharkyextreme.com/hardware/reviews … _se/index.shtml
Last week I forgot to bid on a 3500 missing the cable, no one else bid on it either, only like $9 shipped! Kicking myself over that. Find a cable would suck anyways and I have no need for the tuner part so figured these Compaq cards should rock once they get here.
(off topic)
I haven't tried to see how far my 3000 will go OC wise. It seems like any voodoo card that ISN'T a Voodoo 5 5500 does not scale as well with faster CPU's on older games. For example playing quake 2 at 1024x768x16 with my Voodoo 3 3000 AGP on a PIII 500 Katmai gets me about 74FPS. Moving to a PIII 1GHz nets me 76FPS!! Overclocking the 3000 to 190MHz gets me 88FPS.
Now I found a Large collection of old card Test over at falconfly.de http://havli-3dfx.ic.cz/benchmark-2-6.php
Using a Overclocked Athlon at 2.1GHz on a stock 3000 only gets 83.6FPS!! So for older games atleast on Quake 2 engine that fast CPU's are quite a waste.
This has me thinking an IDEAL glide retro rig of late 90's only needs 733 - 1GHz where others are killing themselves making them work on faster athlons and such!.
(/off topic)
> W98SE . P3 1.4S . 512MB . Q.FX3K . SB Live! . 64GB SSD
>WXP/W8.1 . AMD 960T . 8GB . GTX285 . SB X-Fi . 128GB SSD
> Win XI . i7 12700k . 32GB . GTX1070TI . 512GB NVME