Nobody has any information or can help me out?

Without knowing what the chipset is and whether it supports PCI, that question can't be answered .

That said, a machine of that vintage almost certainly has no PCI capability .

EDIT: And without PCI or VLB, a faster CPU would be seriously bottlenecked . Also, even if the chipset supports PCI, that doesn't mean the riser slot is wired for it or that a PCI riser was ever made .

Are riser cards specific to brand? Like could I get a Dell riser with 2 PCI 2 Isa?

Enchurito wrote on 2020-07-23, 19:18:

Are riser cards specific to brand? Like could I get a Dell riser with 2 PCI 2 Isa?

ISA ones are rather generic. PCI or PCI/ISA ones are not, AFAIK .

Again, knowing the chipset is definitely the first step .

EDIT: The board seems to use an ALI M1429G chipset, which according to unofficial Internet sources, is PCI and VLB capable (apparently one of the first PCI capable ones). So though a VLB or PCI riser for the board could theoretically exist, if the riser slot only has ISA signal pins, such a riser would be impossible .

A1G board info (some):
http://www.uktsupport.co.uk/acer/mb/a1g.htm

No mention if you can use a different riser. However seeing it's still in the VESA timeframe I doubt it will take an ISA/PCI riser.

Well even if I'm stuck with just Isa, from the specs you found and the ones I linked, is it possible to use the AMD x5 133mhz or even the dx4 120mhz in it?

darry wrote on 2020-07-23, 19:40:

Enchurito wrote on 2020-07-23, 19:18:

Are riser cards specific to brand? Like could I get a Dell riser with 2 PCI 2 Isa?

EDIT: The board seems to use an ALI M1429G chipset, which according to unofficial Internet sources, is PCI and VLB capable (apparently one of the first PCI capable ones). So though a VLB or PCI riser for the board could theoretically exist, if the riser slot only has ISA signal pins, such a riser would be impossible .

So if I look at the chips on the board it would help tell if it's PCI compliant? I'm sorry if these are noob questions, I've not used a 486 since I was 10 years old. Just trying to figure out how good I can make this computer for older games.

Enchurito wrote on 2020-07-23, 21:42:

darry wrote on 2020-07-23, 19:40:

Enchurito wrote on 2020-07-23, 19:18:

Are riser cards specific to brand? Like could I get a Dell riser with 2 PCI 2 Isa?

EDIT: The board seems to use an ALI M1429G chipset, which according to unofficial Internet sources, is PCI and VLB capable (apparently one of the first PCI capable ones). So though a VLB or PCI riser for the board could theoretically exist, if the riser slot only has ISA signal pins, such a riser would be impossible .

So if I look at the chips on the board it would help tell if it's PCI compliant? I'm sorry if these are noob questions, I've not used a 486 since I was 10 years old. Just trying to figure out how good I can make this computer for older games.

From a practical perspective, even if a different riser with VLB or PCI exists identifying a part number or finding one may be almost impossible (at least in a reasonable amount of time).

It may be better to sell this system and find one with the expandability you want .

I'm mostly wanting to get the cpu as fast as I can, Isa is fine with me. I'm actually not able to really think of anything I'd want in PCI for a 486.

Enchurito wrote on 2020-07-24, 18:07:

I'm mostly wanting to get the cpu as fast as I can, Isa is fine with me. I'm actually not able to really think of anything I'd want in PCI for a 486.

Even a 66MHz 486 will be bottlenecked rather severely by an ISA video card, AFAICR . Maybe you are lucky and that onboard Cirrus Logic chip is internally hooked up to VLB or PCI, though . I would run some benchmarks to try to find out .

If onboard video is ISA, I would not bother upgrading the CPU, personally, but it's been too long for me to remember actually how bad ISA on a fast was, so it's probably best if someone with more recent experience (or better memory) on the matter chimes in .

So I put in a 486dx4100 by AMD. I think I got the jumpers correct, but I see nothing on the screen when I turn it on. The CPU and power supply fans turn, but no video. Any suggestions?

Enchurito wrote on 2023-08-27, 21:01:

So I put in a 486dx4100 by AMD. I think I got the jumpers correct, but I see nothing on the screen when I turn it on. The CPU and power supply fans turn, but no video. Any suggestions?

Why do you think, that 3Volts CPUs work in this mainboard?

CoffeeOne wrote on 2023-08-27, 21:39:

Enchurito wrote on 2023-08-27, 21:01:

So I put in a 486dx4100 by AMD. I think I got the jumpers correct, but I see nothing on the screen when I turn it on. The CPU and power supply fans turn, but no video. Any suggestions?

Why do you think, that 3Volts CPUs work in this mainboard?

https://www.arvutimuuseum.ee/th99/m/A-B/35881.htm
Because that is the board layout and it's got a listing for the AMD 486dx4100. Is there a setting I need to change for voltage?

Enchurito wrote on 2023-08-27, 21:41:

CoffeeOne wrote on 2023-08-27, 21:39:

Enchurito wrote on 2023-08-27, 21:01:

So I put in a 486dx4100 by AMD. I think I got the jumpers correct, but I see nothing on the screen when I turn it on. The CPU and power supply fans turn, but no video. Any suggestions?

Why do you think, that 3Volts CPUs work in this mainboard?

https://www.arvutimuuseum.ee/th99/m/A-B/35881.htm
Because that is the board layout and it's got a listing for the AMD 486dx4100. Is there a setting I need to change for voltage?

Is there a voltage regulator on the board?

It won't boot with the 486 dx33 either

Enchurito wrote on 2023-08-27, 21:50:

It won't boot with the 486 dx33 either

What do you mean? 486dx 33 is a 5 volts cpu.

EDIT: So the PC does not boot with the 486 DX-33 either?

CoffeeOne wrote on 2023-08-27, 21:53:

Enchurito wrote on 2023-08-27, 21:50:

It won't boot with the 486 dx33 either

What do you mean? 486dx 33 is a 5 volts cpu.

I turn it on, I see a momentary flash of the CD access light, I hear the hard drive. But no video at all

Enchurito wrote on 2023-08-27, 21:54:

CoffeeOne wrote on 2023-08-27, 21:53:

Enchurito wrote on 2023-08-27, 21:50:

It won't boot with the 486 dx33 either

What do you mean? 486dx 33 is a 5 volts cpu.

I turn it on, I see a momentary flash of the CD access light, I hear the hard drive. But no video at all

Again: With the DX-33 the PC works or not?
You did not answer my question: Is there a voltage regulator on the board?

CoffeeOne wrote on 2023-08-27, 21:58:

Enchurito wrote on 2023-08-27, 21:54:

CoffeeOne wrote on 2023-08-27, 21:53:

What do you mean? 486dx 33 is a 5 volts cpu.

I turn it on, I see a momentary flash of the CD access light, I hear the hard drive. But no video at all

Again: With the DX-33 the PC works or not?
You did not answer my question: Is there a voltage regulator on the board?

I don't know what a voltage regulator would look like or where it is. It won't boot with the intel dx-33 or the AMD Dx4-100