Is this ok? Stick a 32-bit riser card in a 64-bit PCI slot?

[Stealth]

Is it ok to stick a 32-bit riser card in a 64-bit PCI slot? It fits, just wondering if it's ok.

 

[SinfulWeeper]

I do not know the answer for certain. But I do believe so.

I would recommend you get the answer from someone more experienced. I read about this when 64bit PCI slots came out and I seem to recall it saying backwards compatable. But my memory is fogged from time.

 

[bozo1]

Depends on the motherboard. If it's an AMD760MPx chipset board the answer is no as the slots are 3.3-volts. 32-bit PCI cards are 5-volts.

 

[Stealth]

bozo1, thanks.

Now, if I stick a 64-bit riser card on my 64-bit PCI slot, can I stick a 32-bit PCI card in the 64-bit riser card slot? I have the Tyan s2466 motherboard, which I believe has the AMD760MPx chipset, since I am running 2 Athlon MP 1800+ on it.

I'm having some weird issues with my board with the 64-bit PCI riser card in the 64-bit PCI slot. Sometimes it would bootup, sometimes it won't. Not sure if it's a problem with the 64-bit PCI slot with riser, or other problems such as the power supply. I'm trying to stick a 64-bit PCI SCSI RAID card as well as a 32-bit PCI video card in 2 of the 3 available slots on the 64-bit riser card (sitting in the 64-bit PCI slot). Any ideas on what I should do?

Thanks...

 

[bozo1]

No wonder you are having problems. You have your 5-volt video card in a 3.3-volt slot. I'm sure it's not too happy.

 

[Stealth]

Thanks bozo1 for pointing that out. Now I'm stuck in a dilemma. How can I power both the 32-bit video card and the 64-bit SCSI RAID card? Does that mean I'll need to get a 64-bit video card? I think that it would be overkill for a server though...

Do you think I could have did any permanent damage to the board? I can't test it right now because I don't have it in front of me. Please let me know what you think.

Thanks.

 

[Stealth]

Turns out my riser card worked only with 3Vs....I'm getting a replacement soon.