Does that board have a universal AGP slot by any chance?

My Abit KT7A has one and later graphics cards like the Radeon 9600 don't work on it either.

Joseph_Joestar wrote on 2020-04-21, 11:04:

Does that board have a universal AGP slot by any chance?

FX5600 (that works) and 8900 Pro have totally identical connectors and support AGP 8x. One MOBO has the same connector, works at 8x, another is AGP Pro (8x + extra power). Fx5600 is a "Universal AGP 3.0 card" and 9800 is a "Universal AGP 3.0 Card" or "Universal 1.5v AGP 3.0 Card". So I am supposed to be in Universal AGP 3.0 Motherboard + Universal AGP 3.0 Card space. The 1.5 - 3.3 mess was around 4-6 years before (1998-1999).

This is a late AGP era build (2003-2004), everything is compatible and from the same timeframe. Lots of guys got the same HW config here.

The issue you mentioned does rise if I put G450 in, this is a 3.3V card. I get a red light (AGP Fail) on the Mobo then. This light won't come on with FX or Radeon cards.

I also had so much issues getting these CPU/Mobos run with my PSUs (except this Chieftec), so I am still supposing something is wrong in that area. 5v 20A was barely enough to start them with Riva128 PCI video card.

I am not sure how low the minimal PSU voltages per line can be. Got 3.20, 4.91 and 11.96 Volts (BIOS, with FX5600).

Sounds like a dead card to me.

I have a 9800xt with the same symptoms.

These are great cards, but due to the shim height on the die from the factory many of them died a hot death unfortunately.

Could be a power problem, my axp 2800 and 9500 pro hooked up to a 500w with 32a on the 5v is unstable and randomly crashes, perfectly stable with the fx 5600 xt though. You might simply not have enough 5v for that setup. I'm looking for a 462 board with a p4 plug so I can use the 12v rail to power the CPU.

candle_86 wrote on 2020-04-22, 04:27:

my axp 2800 and 9500 pro hooked up to a 500w with 32a on the 5v is unstable and randomly crashes, perfectly stable with the fx 5600 xt though. You might simply not have enough 5v for that setup. I'm looking for a 462 board with a p4 plug so I can use the 12v rail to power the CPU.

But somehow it worked years ago... well, PSUs become weaker as the time goes.

I got 360w but 35A on 5v at the moment. Measured the voltage with ATI on the multimeter, minimum was 5.13 during the POST. With FX was 5.14.

Jasin Natael wrote on 2020-04-21, 16:59:

These are great cards, but due to the shim height on the die from the factory many of them died a hot death unfortunately.

Any alternatives from the era? 6600 GT is too new, I'd say... on the other hand, people often upgraded video cards at the time...

Tried booting with Radeon and a PCI card in. No chance. I surrender 🙁

Try unplugging every unnecessary component (hdd and cd/dvd-rom). Connect the PSU only to the motherboard and one of those cables with the Molex connector on the GPU. Get a Multimeter and test the 5V and 12V on another Molex connector that comes from the same cable where is the Molex connector you plugged the card. This way you can know if there is a Voltage drop with the PSU. Also try the VGA output, it is usually more reliable.