2 problems.
1st. Problem
That sp3 is cancer, all it does is cause problems. Install windows 98se with no aids infested service pack then you have a clean install. Installing sp3 or any of those service packs ontop of a clean install makes it no longer a clean install.
2nd. problem.
When running 2 voodoo cards that are not the same you need fast voodoo drivers last version. Factory drivers or those released by 3dfx don't work when no 2 voodoo cards are alike in SLI. Remember to check that the cards are running at 90mhz if you use fast voodoo drivers, becasue the drivers allow overclocking and you don't want that.

Warlord wrote on 2021-09-04, 14:29:

2 problems. 1st. Problem That sp3 is cancer, all it does is cause problems. Install windows 98se with no aids infested service […]
Show full quote

2 problems.
1st. Problem
That sp3 is cancer, all it does is cause problems. Install windows 98se with no aids infested service pack then you have a clean install. Installing sp3 or any of those service packs ontop of a clean install makes it no longer a clean install.
2nd. problem.
When running 2 voodoo cards that are not the same you need fast voodoo drivers last version. Factory drivers or those released by 3dfx don't work when no 2 voodoo cards are alike in SLI. Remember to check that the cards are running at 90mhz if you use fast voodoo drivers, becasue the drivers allow overclocking and you don't want that.

The SP3 was a late addition to see if it made an improvement on my situtation, it didn't, but it also didn't make it worse. On the plus side I have the SSD fully backup at several stages so rolling back to a clean install is no effort.

I should have mentioned it before, I'm not trying to run the cards together but individually. I don't seem to be having any luck with either of them.

Is there a program I can use to see if the cards are working properly. Either windows or DOS would be great.

Thanks for you time.

cookertron wrote on 2021-09-05, 11:22:

The SP3 was a late addition to see if it made an improvement on my situtation, it didn't, but it also didn't make it worse. On t […]
Show full quote

Warlord wrote on 2021-09-04, 14:29:

2 problems. 1st. Problem That sp3 is cancer, all it does is cause problems. Install windows 98se with no aids infested service […]
Show full quote

2 problems.
1st. Problem
That sp3 is cancer, all it does is cause problems. Install windows 98se with no aids infested service pack then you have a clean install. Installing sp3 or any of those service packs ontop of a clean install makes it no longer a clean install.
2nd. problem.
When running 2 voodoo cards that are not the same you need fast voodoo drivers last version. Factory drivers or those released by 3dfx don't work when no 2 voodoo cards are alike in SLI. Remember to check that the cards are running at 90mhz if you use fast voodoo drivers, becasue the drivers allow overclocking and you don't want that.

The SP3 was a late addition to see if it made an improvement on my situtation, it didn't, but it also didn't make it worse. On the plus side I have the SSD fully backup at several stages so rolling back to a clean install is no effort.

I should have mentioned it before, I'm not trying to run the cards together but individually. I don't seem to be having any luck with either of them.

Is there a program I can use to see if the cards are working properly. Either windows or DOS would be great.

Thanks for you time.

in DOS... Use the relevant 3dfx binary for your specific games (descent2, tombraider, etc). Probably best to try with one card installed at a time to simplify things...

In windows... not sure how you're gonna test the card without drivers working... as per previous advice, start with a clean 98se install, try reference drivers with correct minigl installed for your game if necessary (quake2, hexen2, etc.)

were these cards working at some point? did you check to make sure no pins are bent and touching, etc.?

drosse1meyer wrote on 2021-09-05, 16:08:

were these cards working at some point? did you check to make sure no pins are bent and touching, etc.?

Yes all checked. They were working before and I think I've got iMac card working with the lastest FastVoodoo drivers but trying to run the demos included with the driver package hangs the PC. I think the problem with the CT6670 is that it has faulty ram chips, here is a video of it in action (rendering in software): https://youtu.be/rGSBd0MuluY.

Thanks for your reply