Athlon rig:
you can find motherboards that support standard SDRAM and DDR, depending on the processor if is Slot A or Socket A
Best AGP GPU? geforce 4 ti or radeon 8500, the voodoo 3 is good but it won't give you a lot of performance, unless you want it for glide compatibility

Pentium rig:
Most commonly was to use SDRAM, but there are some (server, i think) motherboards that supports RDRAM and i think i've seen motherboards that support DDR (Apollo Pro 266)
Best gpu? same as the athlon, being that both processors are very close in performance, except in applications that use SSE (vs older athlons)

For 1GHz You have the choice of a Coppermine P3 vs a T-Bird Athlon.

With The P3 you are stuck with SDRAM, but with the Athlon RAM choice depends on your chipset choice, KT133/133A will use SDRAM and KT266 and above will use DDR but limit DOS compatibility (no ISA), pick your choice.

Voodoo 3 could work in some motherboards, but you will have to find one that is 2x and 3.3V capable. For most P3 boards, this is not an issue, but with Athlon boards, going KT333 and above will likely bar you from using the Voodoo 3 due to being AGP 4x and 1.5V.

Check here: http://www.playtool.com/pages/agpcompat/agp.html

At 1GHz my personal picks would be a GF3/GF3Ti or Radeon 8500/9100 but a GF4 Ti or Radeon 9500/9600 card would also do well. The Voodoo 3 will be greatly bottleneck your 1GHz CPU and run the more demanding contemporary games for that system (games circa 2000-2001) poorly.

just use PCI Voodoo then, AGP does not really matter.

The only Benefit of using AGP is saving a PCI Slot with Voodoo 3 😁

What about the " nVIDIA FX5500 256MB 128bit PCI DDR VGA/DVI /S-Video Video Card FX 5500 3D"
You can still find these NEW and they are inexpensive and have 256mb ram.

the FX5500 is just a higher clocked FX5200 and the 5200 is slow. Your 4200ti is faster. The 256MB memory are just snake oil on these type of GPU because it is to slow to run anything that actually uses that much.

Intel486dx33 wrote:

What about the " nVIDIA FX5500 256MB 128bit PCI DDR VGA/DVI /S-Video Video Card FX 5500 3D"
You can still find these NEW and they are inexpensive and have 256mb ram.

Phil's Computer Lab has a video on this card, check it out. Compatibility seems to suffer a bit the farther out you move from GeForce 3.

Okay, For the 1ghz. AMD Athlon build with VIA chipset motherboard.
I will use a Radeon 9500 or 9600 card AGP.

And make it an ALL AMD build.
Will there be any problem with this ?

Does AMD make a Sound Card ?

I have an AMD network card too.

Intel486dx33 wrote:

... And make it an ALL AMD build.
Will there be any problem with this ?

Of course there's a problem; ATI weren't part of AMD that far back. They weren't even making core logic chipsets yet.

Meanwhile, sound cards with the AMD InterWave chip exist, but they are all ISA.

ATI Radeon cards never supported table fog in driver so they are not ideal for early Win9x games, other than that you will not have serious compatibility issues. Radeon 9000 series cards can have weird issues with AGP 8x and Fast Writes so you may have to settle for 4x and disabling Fast Writes (unlikely).

I know of no AMD sound cards, but the GUS PnP uses an AMD chipset:

weldum wrote:

Pentium rig:
Most commonly was to use SDRAM, but there are some (server, i think) motherboards that supports RDRAM and i think i've seen motherboards that support DDR (Apollo Pro 266)

There were certain Pentium 4 boards in the early 2000's that used either SD-RAM (ex: HP Pavilion 7995) or RD-RAM (ex: Dell Dimension 8100). It depends on the chipset, manufacturer of the motherboard, things like that. VIA was one of the many chipset providers to support DDR RAM in the early 2000's as well as AGP bus dating back in the late 1990's.

appiah4 wrote:

ATI Radeon cards never supported table fog in driver so they are not ideal for early Win9x games, other than that you will not h […]
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ATI Radeon cards never supported table fog in driver so they are not ideal for early Win9x games, other than that you will not have serious compatibility issues. Radeon 9000 series cards can have weird issues with AGP 8x and Fast Writes so you may have to settle for 4x and disabling Fast Writes (unlikely).

I know of no AMD sound cards, but the GUS PnP uses an AMD chipset:

Yeah, I don't have a GUS or ISA slot.

SW-SSG wrote:

Intel486dx33 wrote:

... And make it an ALL AMD build.
Will there be any problem with this ?

Of course there's a problem; ATI weren't part of AMD that far back. They weren't even making core logic chipsets yet.

They were not making chipsets in the socket 7 era. Slot A was released with an AMD chipset. I'm sure there were socket A versions as well. They stopped bothering because there were plenty of competing ones: SiS, VIA, later NVidia.

elod wrote:

SW-SSG wrote:

Intel486dx33 wrote:

... And make it an ALL AMD build.
Will there be any problem with this ?

Of course there's a problem; ATI weren't part of AMD that far back. They weren't even making core logic chipsets yet.

They were not making chipsets in the socket 7 era.

True but they licensed VIA's VP2 and re-branded it as AMD 640 😀