I would bet there is no way that a Riva TNT could use 9 amps. That would be 29.7 watts, and many of those cards came with a very small passive heatsink, so if they drew even close to that amount of power, I bet they would have burned to death at this point. I would start by looking at chips which have PCI variants, since the PCI connector is specified for a maximum of 25 watts if I'm not remembering wrong, if you get the AGP version of a card, that has a PCI variant the power usage really shouldn't be even that 25 watts.

Perhaps an AGP Geforce2 MX. Should be completely capable of anything that Celeron 450 can handle, has good performance, good DOS compatibility, and is dirt cheap.

I would bet there is no way that a Riva TNT could use 9 amps. That would be 29.7 watts

I guess you are right, the 9A were related to a Riva TNT2 Ultra I believe.. Well assuming the 6A are correct, that is 19,8W as the absolute maximum, so I would want something a bit lower than that. Looking for PCI cards which have an AGP variant is a good idea, but seeing that the maximum power for PCI is 25W it is still not guaranteed to work properly I guess.. Maybe a PCI card would be a better choice?

Perhaps an AGP Geforce2 MX. Should be completely capable of anything that Celeron 450 can handle, has good performance, good DOS compatibility, and is dirt cheap.

Hmm that sounds like a good idea, I found some really cheap ones in my area and I saw a post where someone claimed that mx cards use about 4-5W of power, although that seems a bit low to me.

Thanks for the input so far!

Edit: I just read that someone successfully used a GF2 MX on a 440LX chipset and someone mentioned that a Radeon 8500 worked fine also. The latter apparently draws 23W max..

To give you an idea, the GF2 MX doesn't even have a heatsink most of the time. Anandtech also alludes to it having a 4W consumption.

Hm most of the cards I found on ebay actually had one, most of them even with a fan, but I read the 4W several times now and even the Geforce2 GTS consumes just 8-9W. Sweet!
I found many GF2 MX (400) for just 2-5 bucks, that is a no-brainer. Thanks a bunch, I will report back when I receive one. But I'm still open for other suggestions 😀

I have a 440LX board that does not like any Geforce 256 or Geforce2 that I have tried. It works fine with my TNT (Creative CT6710), TNT2M64 and TNT2 pro. It also works with my Matrox G200 and G400Max.

Edit: I have not tried a Geforce2MX but I did try a Geforce2 GTS and Geforce2 pro and they both did not work

Probably a Voodoo3 3000 AGP. The 440LX is one of the earliest AGP boards released so you'll have to stick with cards that are very comfortable at working in 1x/2x such as the 3dfx ones, as well as considering the 66mhz FSB the CPUs will be stuck with, as well as the compatibility for the games of its time.

Technically you could stick an older Radeon in there since ATI SmartGART is flexible enough to work on older AGPs than the Geforces but ......games

AGP 4x cards sometimes have jumpers to configure for best compatibility with AGP 2x. But yeah a Voodoo3 is ideal for something like this. It's important to have Glide support.

Hm that's a shame. The cheapest (and actually the only one right now) Voodoo 3 3000 I can find is listed for 75€ and honestly, I don't want to spend too much on this computer right now. So if the TNTs work I think I'll try one first and take my time to hunt a cheaper Voodoo 3 or persuade myself to spend more than I initially wanted..

Edit: Hmm I think I found a Voodoo 3 2000 for 50€.. What do you think?

Well, I never thought I would ever buy a 3dfx Voodoo but I sure just did. 44€ shipped for a Voodoo 3 2000 AGP, I think that's not too bad. Not a 3000 but still.

That's what I use in my AL440LX based PC 😀
It works quite well in the games I've tried with it so far.

There she is 😀 I mounted a 40mm fan on top of the small heatsink for good measure. Runs great so far ! Thanks a lot for the help everyone.